I won't play the update, drifter/operator are nothing more than a dispenser of energy and health, that is their purpose until something else happens. I have reached MR 30, to me there is no point in going beyond it, and investing in something I don't really enjoy isn't really worth it. They are more like a tool for certain cases and that is about it.
Opera is nope too for me.
Circuit is not interesting either, because I hate excavation and defence, survival is okay at best and void flood is zariman stuff, that I also hate.
I never have left, I have been here since early 2013. At most I have had breaks of just logging in for some months.