As I am working on switching from SMF to Xenforo for a few months, my users have all pitched in to donate toward the price of this years hosting and the purchase of a Xenforo license. We're a small site, but we really enjoyed the sub accounts mod for SMF. I am a bit sad that this doesn't appear to be supported or planned on being ported for 2, but I, too, would be very willing to in the future ask my members if it's something we want to try and gather funds for as well as pay for. I hope that you will at least consider giving it another look at possibly porting. <3