well person who start the dungeon actually owns it therefor he leaves the grp for any reason(dc,problems he has to leave,gets kicked etc) everyone will get kicked out thats unfair and problematic particularly if u are in random grp(gw2lfg,general chat,etc)it might happen which is very annoying.
i think everyone in the grp has equal rights and dungeon must not reset unless all the grp members leave the dungeon or there is only on person remains after the grp chose the path.
