When I read the subtitle of this forum, I couldn't resist to open this thread... "
How should PnP RPG evolve?
Well... IT SHOULDN'T!
The only result you get nowadays when attempts are being made to create a better, bigger, hotter RPG is that you end up getting a hack&slay-heavy, powergaming-oriented set of rules (see D&D 3.5, for example).
And that sucks.
Back to classic RPG-ing, I say!