Pretty furious at the lack of effort to involve Escobar into this system. Escobar is now coming off an ACL injury, so my guess is not only does he miss the entire offseason program, he probably misses the first half of the season next year, and even then probably doesn't evolve beyond what he has done so far.
You can't just blame the player, they did the same thing with Martellus Bennett and he flourished in New York and Chicago, becoming one of the most dominant tight ends in the NFL. I would argue that right now he is probably a superior player, as he is a better blocker than Witten.
Fasano, and Chandler have also had relatively successful careers outside of Dallas as well.
We simply never focused on getting that second tight end involved, and knowing that we weren't going to do that, we kept spending 2nd round picks on them.
Imagine the players we could have brought in, in the 2nd round instead of these tight ends... and no this is not hindsight. This goes to a complete lack of vision by the front office and coaching staff.