Well, it looks liked I got caught in the move, so I'll just try again.
I can see the attraction to point-buy systems as I rather like them myself. Players have more control over the creation of a character they really want to play, and things tend to go quickly if the overall system is not too over-burdened with rules for all occasions.
The trick with concealed or unknown skills is how to manage that aspect during character creation and early play. You might just have players create their stats, and purchase any resources (or start without resources - and by resources I mean stuff like equipment, vehicles, magic gewgaws, etc., that are purchased with build points.)
Do you intend to start
tabula rasa with just stats and a big pool of build points remaining which will get used in early game play as players attempt to do things? Fate or Fate Accelerated might adapt well to this, as skills, feats, and stunts can be created on the fly during play. You can even view the system reference document for free at
https://fate-srd.com/
This is an interesting concept, and sounds like an interesting player group, too. I wish you well in getting this off the ground. Let me know if I can help.
This message was last edited by the user at 20:05, Sat 25 May 2019.