You don't think Cobb is capable of replacing Beasley? Of course, I know he has had some injury issues in recent years, but that is really my only concern.
The Brown at TE idea has been floating around this board a couple of years, and I understand the thinking to a point. But I don't recall ever hearing anything like that from the Cowboys themselves, and I really think Blake Jarwin could handle that role anyway. I personally think Gathers is on his way out regardless. Witten, Jarwin and Schultz will stick, and I doubt they will want to keep a 4th TE. Of course, I suppose Brown could be the emergency TE in a pinch if there were injuries.