Trade value has to beat comp pick value. That's usually hard to do.
He has tailed off, but maybe they think he improves with more rotation between him and Gregory.
One of the reasons to play guys is to increase their contract next year, and thereby the comp pick we get for them. It won't be popular with fans, but it's can be a decent investment.
Many will probably want DiNucci to start over Dalton, but if we can make Dalton look like a starting caliber QB, we'll get a big fat comp pick for him. That's a decent investment of snaps. And while it would be fun to see Da Nooch, I don't see that he is that ready to benefit from snaps that much anyway, or is that close to being useful.