In terms of how we're treating NPs, I'll advocate for Apo-style. Makes things more fun, and also like half the Servants on our team (and maybe the enemy team) have their NPs as their main armaments, so the mystery would be gone super fast.

Also gonna support Personal Skills being progressively revealed, since usually they're too generalized to make a super significant difference w/o other context clues (which themselves will probably take effort to acquire), or too specialized to the point you'd need to be familiar with their source material to 'get it'.