HelloDarkness07
****.man......are u trying to pour salt on our wounds....by writing a new story and abandoning mason aves and baldur ones......to tell u the truth the idea behind Ur new story is not very palatable......and sorry to be the bearer of bad news but I don't think after u have abandoned two very good stories , I and the other readers are sure that u won't abandon the new story too like Ur previous ones....
Some under utilized/rated powers that I can think of would be= regeneration (weak/slow), chi manipulation (like Iron Fist), reactive adaptation (like that mutant who's name I forget), astral projection &/or possession (it's like a gateway to so many other powers and information), plant control/manipulation, or dimensional storage. Another idea I have= Not sure if it exists but maybe have berserker work towards becoming a god of devouring/gluttony? Give him an iron stomach/digestive or eating power that helps him work towards his divinity of devour.
Hmm how about communion with the elements or something close to shamanism from WOW where you can borrow power from select elementals that he needs to first find the selected elemental, do something(s), get them to agree to a contract, then help them expand their power so that they allow you to use more of theirs and eventually this will lead to something pretty cool idea came from a fanfic called World of warcraft from Umodin though i pretty sure its dead its on FanFiction.Net