It really depends. I twist polys until they scream, but then I've been doing if for 4 years now, and I know just how much I can torture them before they expire.

Plus keep in mind, if you add or delete polys, it'll bereak any morphs that already exist, and if you add polys, you need to make sure that you uv map them, AND make sure they have the same group names as the part they are associated with.

Also keep in mind that objs are copyrighted, so if you were thinking of doing an expansion, and redistributing it, you'd have to rtencode it against the original product.

Some vendors also do not allow cr2 redistribution, so that would cause you issues as well.

Just really depends on if this is for YOU, or for others.

Way too many people take way too many things way too seriously.