I hate the CD variant rules, it amazes me so many love them. d6/level is obscene, and turn resistance becomes rather pointless. If you don't think the CD variant is broken, compare it to what a Hunter of the Dead (CW) gets. Then note HotD is a prestige class specializing in fighting undead, whilst a cleric gets CD turning from level 1+.
I don't mind the table. My problems with it:
-HD-based means it works very oddly or not at all later on
-I don't want the monsters to run away, that's annoying, and potentially dangerous if other monsters see them.
-It should be more level-based for uses/day, instead of the current 3+cha mod
-Paladins should have it starting at level 1
I make turn undead uses/day equal to cha mod +level/4, so it pulls "even" at level 12, and by level 20 is 5+ cha mod. Or rather, I plan to in future games.
I'd like turn undead to have a list of options, rather than needing feats for them. Some would work regardless of the power of the respective undead. Like, you can use it to give undead in the area a -2 morale penalty to attack, damage, saves, and checks for 1 minute. Or weaken the effective CL of the undead enemies' spells and SLAs for a minute. Etc.... None of these would stack from multiple uses, of course. Maybe some ally bolstering, like bonuses to saves against level drain or paralysis from an undead.
I suppose I could also have a blasty option. Not sure what would be fair, though. It'd need to take into account each undead's level of power as well as turn resistance, and would have to be better than just any old reserve feat yet not too good.
These would completely replace the current turn undead. I think rebuke undead is pretty good as is, though.