I voted yes because even though many of the deals were fairly minor, the Cowboys have been fairly active at the trade deadline recently (have made at least one deal in 5 of last 6 yrs according to this trade deadline video I just watched).
I also read a blurb that currently, the Cowboys RB's rank last in the NFL in broken tackles. Now some of that is because the run blocking has not been overly great I'm sure, but still, last is bad. Bigger, stronger RB could help with redzone woes potentially as well.
Jourdan Lewis has not looked very good in either of the last two games and is coming off a major injury, the fact he is even playing is pretty remarkable, but we are an injury to one of the starters away from a complete disaster at CB now. As good as Bland has been, he has also gotten a little lucky on some of these plays he got beaten badly on in that the QB made poor throws. He's a sensational 3rd CB and a solid starter, but CB could be helped.
We need to see what Rashan Evans can do (perhaps will be active this week) although Marquese Bell is coming off the best game of his career. Damone Clark has been ok but he is short on impact plays (no sacks, only 1.5 TFL, no passes defensed and no forced fumbles). LB could be a genuine need unless they plan on Parsons getting more pure LB snaps.
Terrence Steele has been arguably the worst starting RT in the league and clearly doesn't look recovered from the ACL yet. The problem is the Cowboys just gave him a ridiculous contract (which they didnt need to do now anyway) so they are kind of stuck there. They arnt going to bench him and seem content to just try and ride out his struggles.
WR and TE are both interesting. Gallup has not been good, Tolbert had a great camp and preseason but they don't seem confident enough in him yet to take snaps away from Gallup. Cooks has been ok (and he's been hurt some too) but they could use an obvious upgrade opp Lamb. If they could move Gallup as part of a deal to get a more capable #2 guy, they would be wise to consider it.
Love Ferguson and what he has done, but Schoon hasn't panned out yet and is still recovering from an offseason injury he had. He's been a good blocker, but they could potentially look at another #2 TE (especially a guy that could help in the redzone) at least for this season.