I may not like it but I can understand the need to bringing down the Savant curses. That said, adding new, effective elemental damage spells has just gone from "a good idea" to "necessary" in my opinion, especially for non-cold spells. My suggestions:
-Every element should have at least one damaging spell with a base cap higher than 20, since the extra caster levels are now the primary benefit of the Savant PrE's. These should most likely be single target, but perhaps one of the weaker Savant choices (Air or Fire) could receive a high-level AoE spell with a CL 22-25 cap.
-Speaking of higher levels, more 6th-9th level elemental damage spells are needed across all 4 elements, and some of the existing less-than-useful spells should be buffed. Acid Fog should be improved and the issue with hitting more than 4 targets with Chain Lightning should be looked at.
-The nerf to the acid spells should be given a second look and at least partially rolled back. Acid Rain was too good but the nerf was perhaps too severe considering the difficulties with getting ticks of that spell to land, Melf's was too useful for it's low level but it could use a few extra ticks of damage considering how far the nerf went, and nerfing cloudkill was just silly.
-Fire seriously needs to get some more spells like Burning Blood that benefit from the PrE but deal more than one type of elemental damage. It just misses out on too much content otherwise.
I think the Savants could use a few other minor changes (something resembling an elemental form, small bonuses to offensive DC's, a lower cooldown on what's left of the curses) but new spells take priority over all of that. I would be willing to see the update pushed back to see new spells added to it.
Thoughts? Additions? Suggestions?