I don't hate it - I'm not sure about Martin's wingspan, but he's certainly not "big-wing" size and he can't shoot, so he's not a be-all end-all there as a backup wing unless his D is miles better than Huerter's. Richards as a backup big is at least a rim protector, and maybe he's a better option than Len?
The problem if anything is that we send our best salary piece in Huerter to get some end of the rotation probably (?) upgrades that might be at a "rearranging deck chairs" level of impact. It's no disaster, but if there's a deal to be had where Huerter brings us back a legit upgrade, that's where I would want to look first.