Over the years, class bars has become an iconic staple for many classes, but sadly, they were pruned from the game a little while ago.
Let's tell Blizzard how much we miss them and get the unpruning to the next level! (pun intended)
For those who don't know: "Bar" is the small row of hotkeys above your regular action bars, like druid forms
Not only is it useful to free up space from regular hotbars, you can tell what class you are playing at a glance on your screen, it adds immersion.
First thing's first: Rename back Versatility to Spirit but keep the current function. The flavour of the old days.
Warrior: Stance Bar
Paladin: Aura Bar - This is already happening so let's keep it rollin'!
Death Knight: Presence Bar
Shaman: Rename Fulmination to Maelstrom, but keep the current function of fulmination, Add a UI element below mana bar like holy power for paladins
Totem Bar - anybody who mained a shaman from patch 3.2.0 onwards misses this tool dearly
Hunter: Aspect Bar is still remembered fondly besides the Pet Bar also!
Rogue: Poison Bar besides Stealth - (New Addition!)
Monk: Stance Bar - bring 'em back! Rename it to Technique Bar if you want distinction.
Druid: They have a Form Bar - Perfect!
Demon Hunter: Fighting Style Bar - (New Addition!)
Priest: Chakra Bar for Holy and Discipline Priests! Shadow keeps Shadowform
Mage: Mage Armor Bar - (New Addition!)
Warlock: Curse Bar besides Pet Bar - (New Addition!)
Edit for clarification:
Every old bar can still be brought back in some form, it could be like a soft-core Talent Change for certain classes.
If a warrior suddenly needs to tank for example, but can't change talents in the middle of combat he could quickly switch to Defensive Stance for the time being.
By Fighting Styles for Demon Hunters, I mean basically a soft-core switch between havoc and vengeance Specializations
They could be named Frenzied for Havoc and Focused for Vengeance for example.