The only issue is if you have a wide variety in optimization. With new players, it won't happen anyway because no one will optimize probably. Even when it does, it seems like not a big deal in regular group play (more so at something like PF Society I imagine but I have never been able to do that kind of play for other reasons).

That's almost always fixed by letting people fix their defects (respec a little) if it matters to them or talking to super optimized people about how their choices impact others (sometimes there's a conflict there, I imagine, but I've not had one - they usually tone something down tactically, accept they will feel a little OP, or develop a fun weakness in the few times it's come up).