Dallas and St. Louis have exchanged former first rounders, with the Cowboys sending former Ohio State linebacker Bobby Carpenter to the Rams in exchange for former Florida State tackle Alex Barron.

The writing was on the wall for Carpenter when the Cowboys took Penn State linebacker Sean Lee in the second round of this year’s draft. With five players-Bradie James, Keith Brooking, Jason Williams, Carpenter and Lee-in contention for two starting spots in the base 3-4 defense and another in the nickel defense.

Somebody had to go, and the Cowboys made the right pick.

The Rams also had an abundance after the draft as Rodger Saffold looks set to take over for Barron.

Carpenter still had some value in him. He’s a first-round pick that never really panned out in Dallas, possibly because he wasn’t cut out for the position that Bill Parcells picked him for. He was a Parcells guy. He might work better as a 4-3 outside linebacker.

Barron has some value, too. He’s a left tackle prospect that hasn’t lived up to his hype yet. Cowboy fans won’t like hearing that he’s got false start problems. He also tends to hold often as he led the league with five holding calls last season. But who can blame him? Cardinal sin number one for an offensive lineman is letting your quarterback take big shots. I’m willing to be Barron took at least one trying to protect an aging Marc Bulger. I’m ok with that.

Barron represents the greater value for the Cowboys than Carpenter did. They needed depth at both tackle positions and Barron will provide that. He might end up pushing Doug Free at the left tackle spot, but Free will enter training camp as the favorite to win the starting job.

The deal is a win-win for both teams. They turned depth at a position where they were comfortable and turned it into depth at a position where there was a need. Nice deal for both teams.

Draft time and free agency in the NFL is a lot like Christmas.

Your franchise gets new toys.

The Cowboys have a few different types of toys on their wish lists through free agency and the draft, with the most glaring needs at free safety, offensive tackle, middle linebacker and slot receiver. Here are the players that should be at the top of the Jerry Jones’ wishlist, should he decide to pursue them in free agency or with the 27th overall pick in the 2010 NFL Draft.

Free Safety: Antrel Rolle of the Cardinals figures to be released by his team according to the Chicago Tribune. Please, oh please, oh pretty please, let this happen. Rolle would be the best unrestricted free agent on the market by a mile and would probably partner well with strong safety Gerald Sensabaugh, provided that Sensabaugh gets a new contract or at least a tender from the Cowboys (which he probably will). If the Cowboys want to get some depth at free safety from the draft, they’ll probably look at Texas’ Earl Thomas. Thomas had a good combine and he’ll be enticing to the Texans, who have the 20th overall pick. We’d have to leapfrog them to get to that pick. The Seahawks at 14 or the 49ers at 17 make a lot of sense, as they’d be glad to stockpile picks. If not Thomas, then Georgia’s Reshad Jones could be a good pick in the second or third round and Florida’s Major Wright could be on the board as late as the fourth round.

Offensive Tackle: We need to start planning for Flozell Adams riding into the sunset NFL style-playing a disgraceful year or two with the Raiders, Rams or Bears. Unfortunately, the talent pool is shallow and shrinking as teams tender their tackles. The best name that hasn’t been tendered as of yet is San Diego’s Marcus McNeal. He’s only missed two starts in his whole career and he allowed 5 sacks in 16 games last year. He’s going to get a tender, probably a first and third round tender. If the Chargers put only a first round tender on McNeal, Jerry might be tempted to pull the trigger as this year’s tackle class is extremely top heavy. Names like Trent Williams, Anthony Davis and Charles Brown might be gone by pick 27. The best move again is to move up. Bryan Bulaga is one of two offensive tackles who are polished enough and question-free enough to start from game 1. The only problem is that he might go within the first 15 picks. But left tackle might be the most important position for any team looking to do anything in the NFL, so moving up could be worth it. The next best left tackle prospect could be Indiana’s Roger Saffold and he might be around in the draft’s third round. The talent drops off very sharply here.

Middle Linebacker: Keith Brooking, the newest hero for the Cowboys’ defense is not going to be too far behind Adams. He’s 34 now and he’ll turn 35 during next season. We have to be looking for his replacement as well unless Bobby Carpenter or Jason Williams does anything. The biggest name in free agency this year is Cardinal inside backer Karlos Dansby. Again, the talent pool is shallow here and teams will throw boatloads of money at Dansby. There are other names out there like Larry Foote, but Jerry should look to continue the trend of getting younger at this position. Florida’s Brandon Spikes might be a good choice in the second or third round. He does have some deficiencies in the zone defense, but he has the size and the attitude to take on and beat offensive linemen.

Slot Receiver: This might be the position of minimal need as Patrick Crayton is still smart and serviceable and Kevin Ogletree keeps on doing everything right to get himself a starting spot. But the slot position is a position for an obvious mismatch. That’s where guys like Brandon Stokley when he played for the Colts, Wes Welker of the Patriots and Percy Harvin of the Vikings really made opposing defenses sweat. A free agent who would meet that need is Davone Bess of the Dolphins. He’s coming off of a season that saw him catch 71 passes. If we were to address this need in the draft, it’d obviously be in the later rounds. However, there are plenty of guys who fit the mold of a shifty slot receiver who’d still be around on Day 2 of the draft, when the Cowboys usually succeed. A guy who has been shooting up teams’ draft boards is Andre Roberts from The Citadel. The guy was the best receiver on the South team at the Senior Bowl and he turned in a good combine, posting a 4.4 40-yard dash time. He was a top performer in the 40, the broad jump, the 3-cone drill and the 20-yard shuttle. The guy is just plain old athletic and he was dangerous as a punt returner, another need for the Cowboys. He’ll need work at reading NFL defenses and beating press coverage, but he won’t be pressed into service right away.