I'm curious if anyone has previously published a variant of BoL that included character level as a core mechanic.  I understand that careers have levels associated with them already but I'm more referring to a general character level indicated total advancement moreso than that.   While I personally prefer level-less systems myself going back to the mid 90s when I cut my teeth on dice pool systems of the day (like Shadowrun), I could see the total freedom granted by advancement points being a bit daunting for players accustomed to more rigid D&D style progression.  Have any of the official BoL products or related systems like Everywhen incorporated something like that either as a core or optional mechanic?

I don't think it would be difficult to incorporate as you could relatively easily do it with a system ladder system based on advancement points earned with alternating benefits so as not to overly focus on one to the detriment of the others..  After X points, you get Y benefit (boon, attribute boost, combat ability boost, etc).   It would put a cap theoretically on character advancement but it's just as easy to say that after the cap it turns back into the original free form advancement.  I'd assume that almost all players at that point would/should be confident enough to choose their own progression without the help of guard rails.  Thoughts?