I would do it. 10-15 years of Noel trumps 5+ years of Rondo.
It's a good offer so I think Charlotte might agree to it but I wouldn't do it if I were them. Rondo is too old for a team that is that far away from competing for a title.
They really do need a vet leader there though. It might behoove them to make such a move.
If Charlotte is going to reinvent themselves as the hornets, a pretty much guaranteed all star in his prime is a good way to start off on the right foot changing the culture. Plus, they still have a now underrated Biyombo, assuming they keep the pick, and Mclemore or Burke are still available, I assume they'd take one of those two.
I doubt however that they actually bite. Charlotte looks like a team without much direction, and frankly they absolutely cannot afford to fall outside the top 10 next season. If they do the pick is forfeit to Chicago, and that's unacceptable to them.
While its another year of absolute stinkitude, they're not trading the pick. Safer to build around one of Noel/Mclemore and hopefully one of Wiggins/Parker.