One of good thinks could be some kind of "Rules" or "List of Rules" for example ....
because this M2I is rly nice but there is no guide ?
again example ...
i was editing some model and i changed "Scale of Bone" so resul was Corrupted Model
well for me its still like .. "trial and error" insted of making model with grounded rules
also .... someone know them
my knowledge about this is just on low number