Actually, there are plenty -
That offense could be very, very good, particularly with the addition of Zach Martin and Linehan over the offseason. Tony Romo, Dez Bryant, Demarco Murray, and Jason Witten are one the best combinations of QB, WR, RB, TE that you will find in the league. Behind them is a lot of really good potential, especially with Linehan running the show. Consider: Last year Linehan coached for the Lions: Megatron and Bush spearheaded his attack. I see Dunbar/Beasley as Bush-like players with good overall quickness and lateral speed. I think we will see alot of screens/bubble screen and just a variety of different plays designed to get our RB's/WR's the ball in space so they can create. And Dez has Megatron like ability; I honestly believe this could be a great year for Dez as a result; Linehan will figure out a way to ensure he get's the ball in hands regardless of the coverage like they did with Megatron. The offensive line is younger and more athletic then when Garrett took over and can handle down field blocking better.
The defense could be good, but we are going to have to see if many of those injury red flags can actually stay healthy; admittedly, that's a big question. I personally haven't completley given up on Carter, Claiborne, Wilcox, or Crawford to be very good starters, though I understand why patience is running out for many. Church has been moved to SS, which is a much more natural position for him, run-stopping being his strong suit. From what I understand, Marinelli intends to run alot more man defense for the corners, which supposedly plays to their strong suit; I have my own questions about that last point, simply because I honestly don't trust Carr as the #1 - here's hoping he proves me wrong. This offseason I feel the Cowboys did an excellent job of creating depth and competition at just about every position. The loss of Sean Lee clearly threw a wrench in the machine, but it is good it happened when it did - this gives the Cowboys the opportunity to adjust accordingly. They brought in Rolando McClain in hopes that he can somehow return to the player he was coming out of college. It will be an uphill battle doubt, but his talent as a player has never been a question. Add to that you never really know what you have with the host of rookies and UDFA's and I honestly believe there is reason for hope...just not certainty.
With two great coordinators running the show on offense and defense, Garrett only has to focus on the in-game management and should be better by merit of reduced workload. Last year, Garrett simply did not trust Callahan to run the offense; I think it will be different with Linehan. There is alot of potential greatness all over the roster on both sides of the ball; it's up to the coaches now to exercise that potential and, once again, with two proven coordinators who have shown in their past NFL stops that they know how to fit their scheme to their players and get the most out of them, we could very well see improvement across the board.
I completely get not wanting to set yourself up for disappointment; given the amount of questions particularly looming over the defense, it could very well still be a mess...especially with the loss of Ware and Hatcher, who contributed half of the team's sacks last year. I'm not really looking at this next season as the season they should be considered serious contenders and I'm okay with that; for me, with one more round of Free Agency and draft we could see the best Dallas Cowboys team since the 90's dynasty. I don't watch the Dallas Cowboys with the belief that they have to make it to the playoffs for it to be worth my time. But as jobberone pointed out, at this point, we willl have to wait and see.