Personally I always like to organize my skills my own way, but that sounds like a hellish bit of code. More than anything, I hate having the ones I keep using at the bottom, and the ones I rarely use at the top. In some RPGs that means the more powerful ones which become my bread and butter take scrolling to reach. But most games don't let you, so I'm usually happy enough if all the fire spells are together. If you only have 8 to worry about at a time because you equip them, that fits nicely on that screen; I wouldn't whine about having to scroll from upper left to lower right with what you have. In fact I'd actually expect to just take that responsibility on me, and equip them in the order I wanted to present them in.