Well, here's an idea after finishing FFII for the GBA....what do you guys think of a level up system for skills? Here's the gist of it, for those that never played Final Fantasy II.
In FFII, when you buy spells and use them on characters, they start at level 1. After using them so many times in battle (or in the menu, depending on the spells), they'll level up and get more powerful (sometimes with additional effects), up to the maximum level of 16. This is also true of Weapons gaining levels, though they don't gain additional benefits.
So what I was thinking of doing, is something like that. You start the game with one or two skills (Fantasy Orb and Hakurei Amulet for Reimu for instance, and Magic Missile/Narrow Spark for Marisa) and can buy one or two skills at the village at the start, then later on, as time goes on, can buy more for them at various shops. What does everyone think of this idea?