Maybe if you'd stop overanalyzing every little tiny bit of the game mechanics and avoid min-max'ing and instead went for a less specialized and more versatile character build, you wouldn't feel "overleveled"... just a thought...
Well even if I wasn't level system would still be broken, and I would still be level 33 with nothing to do but tons of low level quests. Even the casualist of casuals will eventually get to the same point I'm in, especially if lower difficult awards more exp.
I could use console to level down, but I enjoy being set a challenge and figuring out how to beat it.
I'm trying a death march, main quest only, pure signs playthrough. Fun so far, going to go remove my long post about signs because looking at the character stats page I realised some of what I wrote about signs was wrong, and I CBA to rewrite it.