Possablr re-working for attaching bones

I cannot begin to discribe how impossible it is sometimes to attach bones to complicated rigs. no matter how or what I do, either a part of the model has to be compensated for it or have to position verticies in alkward places, even after all that, anytime I move anything, it looks a mess.

The only way I can think of to fix this is to have the option to manually select faces and points when attaching the skeleton to the model. That will be the best update to this program ever.