Oh Wise One
With regard to leveling, I think rune upgrades are an important factor to consider. A rune upgrade actually gives you twice the stat bump as a normal upgrade. And if you are a good tournament player, chances are you will have plenty of rune shards already so it is basically a free upgrade. Anytime I have an AW within 1 level of a rune upgrade, I tend to prioritize it. Because I know after doing the final knowledge point upgrade I will also get the rune phase upgrade which follows.. And since a rune upgrade counts double, it is like getting 3 upgrades for the price of 1.As far as how far to level them to reach a certain competitive benefit, I don't know. I just have them, level them, and experience their benefits, lol.