Now that we've heard the full song, I personally find Sayonara Crawl to be the most epic, intense, super insane amount of averageness I've ever heard.
It's alright. I don't love it, I don't hate it. It's there, it works, hopefully the PV's overloaded with bikinis because it's springtime and that's what all the cool idols do when it warms up.
Seriously digging Bara no Kajistu, though, song and all. Pretty awesome and random line-up. Extremely thrilled that Okada Nana is among the frontgirls for it.