Thus ends the chaotic and anarchic adventures of Eleanor's band who had the good tone to synthesize in 4 seasons what could have taken 20, making the end less disappointing but still anecdotal.
No surprise, everything that was supposed to happen... happens. Nothing great, but at the same time it's not a bad thing. Sometimes simple is better than something that comes out of nowhere. Sometimes it's better to keep it simple and consistent.
As guessed, Michael ends up human in a situation similar to the one he imagined during the first season, using among others his famous "take it sleazy". Ok. No surprise. But good.