Personally, I would like to see everything get reset apart from mcmmo. Mcmmo takes so long to grind and just as you reek the benefits of it, if it was to be reset, you are going to lose what you have grinded. Balance and Everything else I believe should be reset as some new players have 5k and some of the older players have over a billion. Resetting the balances, rank and map will help level the difference between old and new players.
Yes! If the map gets reset, reset everything else. But, believe me, I've spent a long time grinding to get to 12th on Archery top. If that was wiped, I'd probably end up not grinding for levels again. But the ranks and stuff should go.
I just got to Herbalism 1500. It literally took years of playing PF. I think mcmmo should stay through the reset. I think it should also continue to be unobtainable other than through the intended mechanisms.