I don't like Stack in Denver. He and Melo would clash as far as their play is concerned, their pretty close to the same, unless Stack would come off the bench. Denver needs three point shooting.
I think Howard would work as the two considering they have versatility on their bench with Devin Harris. On occasion you can play Harris, Terry, and Howard at the same time. You would be giving teams quite a few different looks. If Ager turns out to be a player this year, he may be interesting as well.
Martin is completely ineffective without a point guard who can make decent passes, which the Mavs do not have.
He'd get bored without ally ooping all game.
Exactly, this is why I don't think it is good for the Mavs.