... my fear is that it creates a fantastic level one character but doesn't really much help progress or advance the character further once past character creation for non-magic characters.

Like... I get it, everyone accrues skills. Magic users accrue spells as levels are gained. But martial type characters have only Milestones to spend on Revelations, correct? (and Milestones are a very GM-centric mechanic - the players are waiting for the GM to indicate when they can take a Revelation) Anything on that list of Special Skills can't be bought past level one? (On pg 55 of current document, it says that Milestones _can_ be spent on buying SS but pg 80 only indicates that Milestones can be spent on Revelations.)

I totally get that this isn't Pathfinder 2e or something with endless Feat and Ability gains... and I don't want that. I guess I'm just worried that simply building more skills won't be interesting enough for players to further differentiate their characters as progression continues in long-term play.

Maybe I'm misreading things or don't understand some fundamental progression mechanic, please correct me if I'm wrong. Thanks.

P.S. I still love the game.