I'm pretty sure Dame wouldn't be in favor, but that doesn't necessarily mean it's not the best thing for the team.
The more I think about it, though, the less I think it is. I'd be willing to trade Dame for a Simmons package IF Dame wanted out, because that's PG for PG, but playing Dame and Simmons together? I think that takes away from both of them. Simmons needs to be used like Jason Kidd was on the Nets, and Dame is way too good to be Kerry Kittles.
Now, if Simmons would come in prepared to be our Iguodala (also a guy who could do everything but shoot that the Sixers traded), then sure. But everything in this whole saga tells me there's no way he'd be happy with that. (Also: the Warriors got Iggy without trading Klay.)