Meh. I really disliked Dead Space 2. The time altering ability made the game too easy so I didn't put any points into it. Then I get to that one regen boss where you have to use it to open a flippin' door before it smashes you. Really dumb to have an optional ability that becomes mandatory for like one part of the game (and to open a dang door at that). I never got past that door, and I never completed the game.
The first Dead Space is awesome though, but I'm not sad there won't be a third fourth(???). Never would have bought it because the ability tomfoolery in the second.
SERIOUSLY?! I guess I didn't use it at all in the first one too and completely forgot about it. Unless it wasn't in the original game? I seriously don't remember anything like that in the first one. ¯\_(ツ)_/¯
Oh well, not that it matters. Hate it just the same.
Stasis was in the first game, yes. You were required to use it several times to be able to pass through a few malfunctioning doors. You get it for free early in the game and don't have to upgrade it at all to open the doors, preventing the game from soft locking itself.