A lot of "Classic" players are looking for #nochanges. Classic+ isn't Classic and will only be appealing to players who don't like vanilla. Modern MMO players are looking for WOW TBC Gold modern designs and older players prefer a simplicity in design. They're not great in the game, so it is better to make no modifications.
The people who played FF14 went to New World because they now are looking for more or have changed games. Classic+ will need to be as naive as Classic to be able to accept "bad" players (LFR) and at the same time providing modern experiences for cheap WOW Classic TBC Gold everyone else... It's a challenge to achieve, if it occurs. It's likely that the Classic+ community would come together in a single unit due to the fact that it is so divided.