Yes, there are very few high level players on HD, but the game is not dead. It pulls more new players than Voobly, it just can't keep many of them for a long time due to the stability issues. Most higher level players will obviously leave/play on voobly, but might reconsider if HD was working properly. If you say high-level multiplayer is dead, I say it could easily be revived.
a fixed version? ofc it would have more players... but you dont really think they gonna fix it right?