When I reffed, I always used base damage to calculate from, though I altered it to suit the situation and etc. It was a pain having to check out each attack's base though, and the same for accuracy. It always meant that I'd have a pile of windows open, which annoys me for some reason.
In short, I like the idea of having the bases for attack and accuracy (if you like) to be on here with the attack descriptions. It makes it handier for those who actually use them, and for those who don't, then fine, just don't use em, lol.