Hey there.

My 5 druids hit 80 recently, and I've done a bunch heroics and PVP. Out of combat regen blows arse, but in combat is roughly the same if you have the talents that augment it. The resto of my group is always the last to run dry on mana but if I want I can use innervate on her twice or more if I ever found a fight that i needed too but I rarely use it even once. I mostly use innervate between trash pulls to keep me going longer before I have to stop and take a drink.

As for heal spamming thats a no go now. But if you bind a dps key that is separate, then heal keys like you mentioned you should be fine. All of my heal binds on my resto also have DPS bound for my boomkins and a one stop tanking macro for my bear. My Boomkins have 2 extra DPS keys bound that have no corresponding resto keys bound so my resto can just chill if I dont need the heals. The one macro I use a lot for trash that is almost spamable is something like this (trying from memory as i cant get into wow atm) :

#showtooltip Lifebloom
/use 14
/castsequence reset=combat Lifebloom,,,,,,,,,, Lifebloom,,,,,,,,,, Lifebloom,,,,,,,,,,

With the lifebloom changes you really need to let it bloom or it runs you dry on mana pretty quick. My bear tank when i hit 80 equipped a lot of craftable stuff, polar, titanium earth etc. My dodge was crap like 31% but i had unbuffed HP of 41k which gives me lots of time to HoT up and get some LB rolling. As for stealth run a lot of the mobs are tightly packed like in Utgarde Pinnacle hallways or see through stealth like the dogs in the patrols, but you can skip trash in a lot of spots if you wanted. I have been doing full clears because I need the rep while wearing my faction tabards.

All in all I have been enjoying my new druid group quite a bit. I bought dual spec for them and switch over to 5 boomkin for PVPing which has been a lot of fun. Insect Swarm and one moonfire kills just about anyone and its easy to spread the love around. Stand off at the AV bridge just outside stormpike? No problem I stealth up and pop starfall, force of nature, barkskin and tranquility and hope I don't get feared around lol.

I gotta head out but I hope my little rant might be of some use to you.

Cheers