I can see fish slowly figuring things out with the team, but it could not be denied that he has problems establishing the identity of the second unit and so he is experimenting what fits what and this has resulted in unstable results the last couple of games.
I really wonder why he abandoned the set up he had in the pre-season with grant/gallo/early/Dwill/KoQ and now i think that with calderon regaining his shooting and AA's performance they will be adequate in the front court.
Also pre-season KoQ is probably just as effective as KP in the first unit so fischer can explore with set ups that put KP as one of the main options for offense in the second unit.
As for questions regarding what could have and could have been, i think it's kind of useless thinking about it now and I think Phil knows that. Phil can only do so much within his role. And So far the way I see it Phil has been doing the right things - drafting KP, and grant bringing in quality players in RoLo, afflalo, DWill (come on, he did show flashes of his ability) and KoQ ( I want good old rugged KoQ back
).
Also I think Phil believes that melo still has the potential to make the knicks good again.
So it's really up to melo if he can transcend his limitations and do what it takes to win, that includes relearning and re inventing his game and promote the development of all potential of his team mates.