Where's the option for 'none of these? That would be my poll vote at least.
But if I were to pick any, it'd be the bard. However it should be having either only 2 specs (dps and heal) like DHs do, or 2 ranged dps specs as well as a heal spec.
I haven't read any of these 'concepts' because I have literally zero interest im them.
Also, based on the title I thought it was a thread about "what existing class will you change to in 2021".