These suggestions are mostly for neutral clerics but having some weapon prefixes made for neutrals would be nice too.
Hammer of the Pendulum:
Deals 1d6 sonic damage to Evil or Good creatures.
1) Other options for summon monster, as was said in another thread having an evil and good choice for each level of summon monster and possibly a lawful and chaotic option would be a great increase to the variety.
2)
We have create undead.. but theres a lower level one that's possibly more useful and the undead it makes arent going to turn on you because they're unintelligent. Though they can still be TURNED or commanded by enemy clerics.
Animate Dead... (level 3)
Creates skeletons and zombies from the remains of creatures. (create undead makes mummies, ghouls, ghasts, vampires etc)
3) Speaking of turning for clerics, letting neutral clerics via enhancements shift their focus to negative energy rather than positive and affect the way they effect undead. When a negative energy cleric turns undead they are stunned in awe rather than being turned and running, and when they would be destroyed they're commanded (like the level 2 wizard spell) they'll still turn on you after a certain amount of time.
This is effectively a DOMINATE effect for clerics, so they'd need the new DISPEL CHARM ability sorcs, bards and wizards get.
You could also change their default healing spells to inflicts via this enhancement. Good aligned clerics wouldnt have this option, but lawful neutral , neutral or chaotic neutrals could choose it.