I have never heard a complaint against the 20 minute cool down on our elementals. At 20 mins it's obviously an emergency/solo something powerful spell but I'd like to see it dropped to 15 mins, or even 10 if I could be greedy.
That's just coming from a freshly 68 shaman though :).
I won't try to make up spells since I'm terrible at balancing but a few general things I'd like to see:
Insta druid-like GW, there is no reason not to have this, it'd solve half the problems that i hear about.
An HoT, other than ES which is a nice "smart HoT" but it's a 41 talent. We are the only healing class that doesn't have an innate HoT spell.
Perhaps a talent buff to Lighting shield that adds 12%/25% chance to stun 1-2 seconds.
Add 1-2 seconds to ES silence
Hex, just like the npc trolls have. turns people into frogs for a few seconds.
NPCs also have a earthgrab totem, I like that idea too, but it'd have to be one or the other with Hex though, two CCs might be OP. (Hex seems like more fun). Or hey, just make Stoneclaw work on people too and add 150% health to the totems.
A spell like Lighting on the same cool down, just not nature based.
An upgraded Grounding totem that absorbs 2 (3?) spells or multiple non-damage spells.
With WotLK coming out, I forsee us getting newer versions of the same spells (boring). Instead of a newer mana spring, maybe a mana drain and tranfer totem?
And lastly, something that I'll never get ever ever, but it's my pipe dream. I wanna have a version of stealth were I turn into a rat so i can sneak by certain mobs, but it won't be stepping on the toes of druids/rogues since I'll be visable. I'm a reasonable guy though so I'd settle for a rat that i can control via a channel.