Since the wall physics were funky last night, I only played casual. The games were surprisingly tight and competitive (the ones I started--the ones I spawned into were mostly lopsided as usual). I've been playing exclusively ranked the last few months, so I was pleasantly surprised.
By the way, I'm sure you already know, but you get season rewards based on your highest achieved rank/tier during the season, not what you end on. Plus, they're going to have more ranks next season with a soft reset. So if you're in Rising Star now, there's no guarantee you'll start at the beginning of an arguably comparable tier next season. Everyone's probably going to have do some grinding to get where they want to be when the new season starts.