What classes do you want to see in future expansions?

Can be a class that has been in a previous Diablo or a new one or something generic like "throwing class".

I want a Paladin/Warrior class.

since they dont tend to repeat expansion classes..

how about a demon summoner, royal knight or perhaps an arch angel.

I think some kind of shapeshifter class would be cool in Diablo.
Shift into different beasts dependant on your spec. Like a boss

I want Rogue to come back... But they kind of remade it with the Amazon and now the Demon Hunter.

I think the Templar will become a playable class next xpac. He will play like the old Paladin, but have a style that will fit in with the new D3 approach on characters.

I also think an Engineer will be introduced that will be non-mobile ranged class (opposite to DH, that is very mobile). Think of it as a ranged class that can take some damage, can't move very fast and has mechanical "pets", like a turret that can be placed.

A Druid could be a possibility, but we know Blizz doesn't like to copy over old classes unless they are "core" like the Barb.

The only other crazy idea could be a Converted Demon, that is, a demon that has switched sides and is now fighting to take down Diablo. That would be very cool.

That...would be amazing! There really isn't a "beast" class yet so I'm surprised they haven't had one. Maybe in 10 more years they will have it in Diablo 4

How kewl would it be to play as a daemon who once one of the prime evils was killed .. is now able to enact its own free will and decides to help the heroes in order to enact revenge on its previous masters.

alternatively a fallen angel who has decided to break the rules and directly aid in the fight.

would be fun to unlock diablo at max level or something like that. Would be fun to play as diablo

Maybe something unique like a character made up of masses of insects, or a Panda with a bong-staff that says silly catch phrases voiced by Jack Black

oh no... no more panda please...why every game these days have a panda.

Diablo needs more Cowbell

i just want the old batch of classes on D3, specially the paladin

Sadly, I don't feel like Blizzard will budge on the paladin or druid. I really like the idea of a converted demon or a demoted/fallen angel type class. I could see either of these being almost a hero class with a more diverse mix of caster or melee stances depending on skill choices and play style. I would love to see shapeshifting and I think it is something both of those could do easily.

They so need a druid and a Ninja turtle class with nun-chucks!

Well an Angel Class would be EPIC
Also a Templar would make a good remake of the Paladin...
Also a werebear or werewolf based class would be a real nice addition =D

Yes, shapeshifter class.