While I don't think the author thinks it forms an academic quality taxonomy anymore, I do like the ideas in "Players who Suits MUDs": http://mud.co.uk/richard/hcds.htm

Especially the idea that lack of friendly ux leads to more communication and cooperation between players. I don't think it's completely unreasonable that forcing network effects in "Mealsgate" (how do I even install pokemon go) might help form stronger network effects - which in turn is what surveillance machines/skinner boxes like snapchat needs in order to spread.