Someone other than me should update the WIP OP, many of the new mechanics are somewhat beyond me >-<
<Snipped quote by Antarctic Termite>
A suggestion: our goal with this is to encourage Might spending on useful stuff rather than on power-levelling, yes? What if, instead of spending Might to increase your Level, you Level Up whenever you spend your Level's worth of Might on things other than Holy Sites, Domains and Portfolios? (The exact quantity of spending needed could be rebalanced, of course.)
<Snipped quote by BBeast>
Haven't read the draft OP yet, but I'd like to raise that some gods will play cautiously with their Might simply because they don't know when they next need it, even if they're active, in which case we shouldn't punish them for actively choosing to stay quiet. Also, losing excess Might at the end of the turn is also incentive to try and level up with your spare Might if you have it, and it's enough.
I think the Might cap / Might expiry should be merged into a simplecap = 2 x Might per turn
rule. That way you can still save a little, if you feel like playing that way.
I also would still like to keep the level-up-available-if-Might-is-spent rule, amended somehow, maybe so that Might spent on levelling doesn't count.