This DB is gonna be as much of a shitshow as the last one. Oni already isn't canon, so they're already on the slippery slope that starts with "why not allow UDON comics stuff" and ends at "lmao why is an Asura's Wrath character fighting someone from MK".

Also, I can't really think of any feats for really anyone in MK that isn't some variation of "X is a super powerful being that got beat by Y in MKZ". You can do some weird circular powerscaling that ends up looking like Liu Kang > Shao Khan > Dark Raiden > Shang Tsung and Quan Chi > Liu Kang, and the entire verse is like that. No one really busts a mountain, cracks a realm or whatever, its all people/gods killing other people/gods, soul/time hax, or people getting jumped and losing fights they shouldn't.