To be clear this is not about balance. Balance can change day to day. I want to know what you want in terms of playstyle.
For me Monk is my baby and I like other hybrids so for monk I want the class tree to have the semi used abilities from each spec available at the top like RSK, keg smash, and renewing mist. Ideally I also want to see how they handle movement because triple chi torpedo and flying serpent kick into tigers last was fun for 9.0 testing. There might be a possibility of stagger existing in the general tree as well which boosts our survivability. My main hope is for aoe/st to be different builds and a return of controlled Clones with chi explosion.
Paladin will likely have word of glory, templars verdict, and shield of the righteous at the top. Also possible that crusader strike is a talent and holy can build without it. The aoe build for ret could have the projectile divine storm while single target holds final verdict.
Shaman with 2h enhancement is a possibility along with a cannon elemental spec. Make enhancement have a choice between powering up raptors or going full on hard hitting strikes. Make elemental able to choose between fire for ST and lightning for aoe.
Those are my three big classes and I want to know what others want
If I see "2h enhancement is too weak" or "X will outperform Y" I'm just going to assume you can't read