Yeah, well that's a problem with the stone (although geez it takes a lot) and I hesitate to call it a flaw really...
just adding some thoughts...
Envy-->Placed in freezing water. -> cold -> someone from north? armstrongs sister? but she seems to like swordfights more... dunno :(
Wrath-->Dismembered Alive. -> scar?
Sloth-->Thrown in Snake Pits. -> sounds more like desert-death so i guess he doesnt die so soon since he is in northern hq...
Greed-->Put in pots of boiling oil. -> done ...
Gluttony-->Forced to eat rats, toads, and snakes. - would he even care? (thinking of what else he ate already...)
Lust-->Smothered in Fire and Brimstone. -> done
erm correct me if i'm mistaking too much, could be that there's something lost while translating into german in my head ^^"
yea, kinda tough to see how this theory will work out for gluttony, i hope they don't twist to story to silly lengths just so the sins will work out.
i'm thinking gluttony probably won't die and end up as garbage man or something(he can eat the garbage :p saves space for landfills), since he has proven to be very stupid and easily controlled by just about anyone.
lust told roy that the stone is the COrE of the homunculus.thus when the stone is forcefully taken,the body regenerate from the stone.
it happened before when roy took lust's stone from her.also when envy was swallowed,only his top half body(along with the stone) by gluttony but was still able to regenerate.so as long as the stone has energy, they wont die