The better thp talents truly need to be brought down a bit. Not much, though.
But… what’s the problem with Mainstay? Or Enhanced Power?
I’ve certainly used the latter on a melee class, and I see no problem in doing so. And I see no issue with talents on different classes having different synergies with different weapons. Class identity and all.
As to the actual OP:
Yeh, that’s rather weak. Could do with a different level 5.