GG is still a phenomenally good multi-purpose deity and probably still my favourite to play around with. I just think Enlightenment is sort of around the level of Chaos Avatar (maybe a little harder to leverage and time balanced against JJ giving you more grief early game) even as a Paladin on a map with loads of extra exp hanging around, and so it feels sort of like it should be a bit cheaper to make it more flexible (again, 80 piety/64 for Paladin seems like it would open it up a lot) or maybe offer a slightly bigger bonus per bead to make it more rewarding to stack up the beads.
Stone Heart's the only other boon that seems a bit doubtful now. Unless you get an early Lemisi and the right kind of boss it's just not coming into play. I'd probably say either go for revealed walls OR revealed enemies as a precondition, or cut down the number of walls to 8 or so if you're keeping those preconditions. Like all same-screen resist lowering things it's useless on a lot of the vicious dungeons anyway and having the walls revealed forces you to spend a lot of exploration, and with just 5% resists for 15 walls it's hard to leverage with preparations, soooo...
personally I think if you give those two and maybe Tikki Tooki's poison a tweak they'll all be in line.
That said, I understand if more god balancing seems a bit much
Edit: I occasionally late-game JJ and convert/kill things like mad for a chaos avatar without petition.