I just run a fate if I pass bf it or someone asks for help. Beyond that not even bothering much. So far 2/12(I think in total 2 hours spent on fates overall since patch). This isn't meant to be grindable but something you do when you have nothing else to do - or just need to do something or other to pass the time while waiting for something etc. I wait for a lvl 50 unspoiled node... get a fate in there here and there... switch to miner... hit rocks... port to next one then go do other stuff.