Let me say, first, that when I saw the powers in the PHB that night I brought the book home, my heart sank.
I didn't like it one bit. It seemed contrived and gimmicky and fiddly and that I'd never know it all, and didn't want to.
I'm still not entirely happy with powers. I marvel at what it accomplishes at the table, I really do like how it can work, but I sympathize with those that it strikes as 'off'.
I do, now, like the powers mechanic in part because I've realized I don't need to know them all, I don't even need to really know my own powers by heart. For me the format of them makes it easy to reference on my character sheet or, before a good char sheet, keep my thumb in the PHB. (note, using a good character sheet with room for full descriptions, or cards, is a really good idea)
Making up new fluff started as an accident with me, I didn't know it, and had just written down the name and mechanics, so I faked it. I threw something out on the fly. It was 'Sacred Flame' and I just started saying 'TeBeDi wispers a prayer "May Ilmatar bless you and show us the light"' or a variation thereof. Invention being mom and all that.
reflavoring the entire ruleset is a lot of work. I think it's fair to point out how annoying it is.
Yea, don't do that. Reflavoring the entire ruleset, I agree, would be very annoying.