I know there was a very similar thread about this before, but I came up with my own idea and want to know what people thing. This would be a way to model characters that have lived a very long time and should be considerably more skilled because of it. I know Aspects are a great thing for this, but I wanted to try another way.
Centuries of Experience
Cost: -1 refresh, must have high concept related to longevity, skill points
Leave a number of skill points unspent. These unspent skill points become a pool of Experience Points, available each session. Your skills must sill follow a pyramid. Before any skill roll, you may instead to choose a number of experience points and use that value instead. Example: Spending 6 experience points would mean you rolled as if your skill were Fantastic, instead of whatever its actual value is. Once experience points are spent, they are unavailable until the next time you Refresh. You may not spend more experience points than your campaign's skill cap+2 on a single roll.
What do you guys/gals thing? I know spending skill points for a power is unconventional (this is sort of a Fate Core approach, although not directly), but I think it works nicely. Of course, invoking aspects may be more cost effective. I do think that this could possibly made a -0 power.