Yeah, I am very impressed with how novice friendly this is (and commented as such in another board I frequent).
One thing learned from
figuring out the cost chart... you probably get +1 improvements to magic weapons/armor/etc on increments of 5... ie, +1 at 1-5, +2 at 6-10, +3 at 11-15, etc. Of course, your magic items are higher than your level usually so it's possible you end up with items over level 30, but if not that puts a +6 sword/armor as your cap in epic levels.
Which seems low based on the rest of the math (like for monsters), so there's probably something I'm missing. 1/2 Level + 1/5 Item doesn't come close enough to the +1 / Level we're seeing on scaling things... though I suppose you might also get at least +1/8 ability score increase, and that just leaves 7/40 to get through feats, paths, and power bonuses.
Hmmhmm. I guess that's dealable.