My advice is to merge HoJ with another guild. As you know, us few folk in THF had to do that, and it has done us a world of good. Think about 5 of us moved over to Fatal Alliance, a decent size yet tightly knit mature guild. We always get regular op runs (sometimes 2 groups). Everyone is very friendly, and there is always players on mumble to chat to no matter what time of the day.
Seriously, get over the pride of representing a long time guild, search carefully and chose the right guild to house HoJ and take the plunge. You'll still have the forum to keep the HoJ core alive, but at the end of the day, when one of your most dedicated members wants to move home, something should be done.