Oh boy, someone was very wrong :DDespite the great efforts of volunteers like Jineapple, I doubt it will ever take off on Voobly. Only HD 2k+ are really bothered to look for better options and there are not many in that range.
It's 2 additional steps which are not massively complicated but still deviate from ease of access.
For Voobly AOC players, HD civs don't offer anything new or exciting. If that was the case then forgotten empires would have taken off when it was a mod on Voobly.