Training Rules?

[Zombimode]

I was looking more for something that would work in a World of Prime inspired game, where class levels don't represent training of any sort but stuff being downloaded into one's brain ala the Matrix and "I know kung fu!"

Sure, but that is like trying put a square peg into a round hole: leveling up and thus getting better or getting new abilities is the effect of training. You only benefit from training if you are ready for it (have enough xp), and the training for adventurers is often assumed to be covered by their adventuring activities instead of going to the dojo (but not always).

If you change this core assumption of the game, you have to live with the consequences.