Call me bias but I still blame Spring 2016 for their fear of doing another hard event. Summer 15 was bad because the debuff mechanic was cryptic as fuck but the other maps (despite the roadblocks) are still clearable. E-3, E-4 and E-6 are a pain but not brutally punishing.
Spring 16....on the other hand, is first off really Land-base dependent. This makes the CLTs almost useless and most newbies must rush to get a Type 3 Shell, blocking them off early. E-3 and E-4 are decent map and E-5 is fun. However, all that shit went downhill pretty fast with E-6 and E-7. Jesus fuck....fuck those two maps. If Spring 16 consist of just E-1 to E-5 it will be a pretty good event.
To be honest their previous few events aren't that bad. Fall 16 is actually good even with the E-4 roadblock (but that's a decent one). The hidden starting point mechanics aren't that convoluted too as you can figure it out pretty easily (yes, we did have experiences from before unlike Summer 16). Winter 16 is almost good except the hiccup at E-3 TP phase. If they tell us more clearly that Saiun will be used up faster than toilet paper then people would have prepared more.
With their past few events, I'm still looking forward to what they will throw at us this event.
I don't know man, Spring 2016 was pretty easy for me compared to winter 2017. :<