I had an absolute blast playing Nexus Blitz. Seriously, it's one of my favorite game modes now, right up there with Ascension. It's fast, its crazy, there's little meta, and it's fun! Trying out cool builds via the extra gold gain and playing with a fun full build without a 30min investment was amazing.
But now I can't really dig the normal game. Not SR normal, I stopped that quite a while ago. Even my normal ARAM feels kinda lame now.
So even though it's got some issues, serious props to the NB team. I hope it (and Ascension!) will come back soon.