I wouldn't scoff at the trade proposal outright. I also wouldn't do it right now either. Remember, we still have JO and Perk out.
However, if the following 3 things occur, I'd think about it:
1) JO and Perk both come back at 100% (or close to it).
2) Daniels proves ineffective guarding 3s.
3) Danny doesn't think he can or doesn't plan to sign BBD this summer.
The age thing really doesn't matter with Hill if BBD is going to walk next summer anyway. If BBD is going to walk (or Danny won't pay him), he might as well be 40 years old.
Still, I wouldn't give up BBD unless we have to. Even if BBD is going to walk, I still think he helps us this year UNLESS Marquis is ineffective or goes down for the year.