Yeah I gotta say, this does not sound fun.
This just sounds like you’ll spend a lot of time feeling like you’re not up to par. They have done things like this in the past where they give a class a “buff” that is completely mandatory to maintain at all times. Such that it is not really a buff. It is your normal level. And so not having it up means you’re underperforming. That’s makes it not fun, but tedious. In this case though it’s even worse, because you only have a 25% chance of the “buff” fully activating.
They have had the good sense to get rid of other such tedious abilities like Savage Roar and Inquisition. And in the case of Slice and Dice they’ve made it automatic through Cut to the Chase. But the way they’re clinging to Roll the Bones is just so tiresome and befuddling.