Another Idea(how i interpreted the system first from the limited description): Upgrades persist until you infinity again. you end the ascension/rebirth with 5 levels in Wisdom? You will have those 5 levels at the start of the next run. No un-spec, maybe increasing costs? ending every run with another level in racer sounds like fun after like 50 runs
Would this be broken? Maybe.
Edit: actually, at least Strength and Racer would need hard limits and/or scaling costs on how many "Infinite levels" you coud have with this, because getting to 1000x damage and 10 APS sounds like it would break the game in half. anything else is a lot less broken