I've seen a few threads on this topic in other class threads so I thought I'd start a druid one. Going to start with a couple of abilities that I don't think druids need and hopefully you guys can go from there. This is from a resto/balance standpoint. Not as familiar with feral dps or guardian.
For the most part, in my opinion, these are extremely situational abilities that very rarely get used:
1. Soothe
2. Entangling roots (since u can now pick up FoN for instant roots and nature's grasp to peel melee)
3. Nourish
4. Bear Hug
and faerie fire for certain specs (integrate it into other spells. don't have too many ideas with this) Not completely sure on this one. The prevention of stealth was pretty unique but with 10s duration in pvp much less desirable. In PVE it's rather awkward for balance/resto to apply (and why is a caster applying sunder not CoE?)
Looking for other ideas or thoughts on the ideas that I listed here. A lot of the ability bloat was toned down in MoP by not giving all the specs all the spells, but usually things like mangle and rake are on your cat bar anyway so it doesn't actually lead to this button bloat issue that has been brought up.