Spend a check as in the “checks” you get for “players’ turn”? If so, I would imagine that it takes a very long time to exp up.
I’m thinking only getting “passes and fails” from tests, not assists, since you only do a few rolls per session. But - if Nature is used as a substitute, or you spend Persona to add Nature to your roll - you forsake your right to “pass or fail” And allow from check rolls as well.
Or, do something similar to how Conflicts work. You can only get one pass or fail and get to choose from the skills used during entire conflict.
So for a regular obstacle, even if it’s multi-rolls, player only get to choose one of all passes and fails rolled to overcome that obstacle.
I just want character progression to be more in winter season session than in the regular sessions. Normal sessions should be avout RPing.
And, with the neat 2ed new Wises rules players gets a new way to boost their skill progression.