@KoLI like this system, though I feel like the alternating 2s and 3s for gains should flow based on level. For example, earning 3 points on every level up until Lv7, then 2 points from there.
My proof is competative Metas, like Pokemon. It's faster early growth that encourages people to push further and further, and the slower late-game growths that make people stay for the grind to reach new heights.
Also I'd love to see a Strength/Agility/Magic scale built into WotT, probably based on 20. 20 being god-tier (Ex. Ni-Mu's Agility), 10 being average (Ex. Ghelgath's Agility), and 1 being piss-poor (Ex. Torag's Agility). It could help settle disputes and give a base for ranking.