The new level up method I am testing right now in this new campaign (We had only one session for now, so there is no feedback yet). Found in my old notes, probably inspired by this post. I call it the slot machine level up.
Instead of having your classic charts (for example the fighter's one above) I cut the requirements approximately into a third, rounding down to compensate the fact that I don't use prime requirement reductions.
level 1: 0
level 2: 600
level 3: 1200
level 4: 2500
level 5: 5000
level 6: 10000
level 7: 20000
level 8: 40000
level 9: 80000
level 10: 120000
level 11: 160000
level 12: 200000
level 13: 240000
level 14: 280000
Once a PC goes back to town with XP enough to get a new level, they do a training roll: a 2 in 6 chance to level up. No matter if you fail or pass, your XP amount is set to 0 after the roll.
This, in my humble mathematical knowledge, gives PCs stastically the same advantage rate as in the original (1 in 3 chance, with one third of the XP), but has a handful of things I like:
- Making uneven advancement for different PCs, because I like when there are PCs of different levels on a party as it makes for interesting hierarchy dynamics.
- Random payoffs have an addictive component. The feeling of "maybe I could level up at the end of this session" is something I think is cool.
- The amount of XP you have to track is small as it restarts from zero every time you level up. This has not any advantage beyond the psychological sensation of not tracking a big amount of numbers, but psychological shit is important. We live on the mind after all.