[Maromar158]

I would treat that situation the same way with someone that has low strength stat-wise but roleplays otherwise, or someone that has low celerity but roleplays as dodging really well- it goes foul of having abilities your character doesn't actually have (as per Rule 3 on the old wiki, or admittedly more vaguely as per the new wiki and forums). There's already a connection for how mechanics tie to roleplay (redtails are lucky, glykins are immune to poison, etc). In my humble opinion, it is advantageous to have mechanics tied to roleplay, to better enhance them. Focus is a tangible thing in this world, and while it might not be literal discrete numbers in-lore, it is still a force measured by the game system nonetheless.

I get where you're coming from, but there's a difference between someone roleplaying a spell they don't have icly for metagame reasons and the number crunch not lining up perfectly with what your concept for a character is. One's an organic limitation, the other's an arbitrarily enforced one. Focus is a tangible thing in the the world and having it pigeonholed by something that forces people into a corner creatively makes for a stifling rp experience.

I do like the idea of focus sensing though. Maybe as a setting one could manipulate, or as it's already done by some, as something more consistently placed front and center in a charecter's profile. As it stands, there's nothing keeping you from emoting that you're sending feelers out to sense people's focus levels.