it is a broad term of any preserved body that simply doesn't decay (IMO)"Mummy" implies no scientific possibility of reanimation, does it not?
since you asked, this is my opinion on the points you made:
1) may be in some cases, may not be in others
2) right
3) right
4) a bit, and I don't
5) could be
6) sure, yes, not if they don't have to, maybe
7) one could say the still living have priority over the no longer living
8) very deep hibernation that keeps the heart beating slowly (like the current procedures cooling the heart during surgery) will be safer than keeping them dead and reviving them again