Woot! Just when I thought it was impossible, I find myself actually agreeing with you. Sorta.
Divines would be greatly assisted by
1) An amped up cometfall, including gear that boosted its damage
2) A powerful AoE that didn't involve kiting. Given the melee propensity to ignore blade barriers rather than use them, an AoE that could just be cast on where they opt to stand (assuming they opt to stand together at all) would be useful.
As for the others....
2. Quicker cast on symbols.
Find Quicken feat. Drag to hotbar. Click. Done!
3. Longer duration on greater command.
Cast Cometfall. Get CC and damage. Two for the price of one.
4. A second higher level version of the alignment spells like holy smite with greater effects.
Base lower level spells essentially worthless at level. Higher level spells will likely be worthless at level as well. Plus, I'm busy throwing heals. If I need to start consulting the Monster Manual to determine what alignment spells to cast, I'll likely look up and see an ocean of soul stones where the rest of the party used to be.
5. Much improved casting time and damage of the fire spells like Firestorm.
Firestorm is so worthless I'm not sure it can be made viable.
6. Continued improvement of summon spells
Would only be useful if I could summon a stack of major mana pots
