After all this time am glad that AfO is finally gone, the dude really overstayed his welcome, but I guess it was important to the story as a whole that he lingered as long as he had. Also I am content with the way Shigaraki was handled. If this all ended with him surviving and seeing the error of his ways or whatever then I'd call bullshit. I don't see any real way to have him survive that won't piss off a ton of people, both in the series and people irl.
Looks like we are ending the series with a quirkless Deku, unless Horikoshi has something else up his sleeve. Deku will likely continue on as a hero, becoming the number 1 hero quirkless as Hori originally intended, probably using that Iron All might tech.
One possibility (though not sure if this would actually happen) is if at the end when Deku and Shigaraki were having their final words, their fists touching that whole time, if Shigaraki decided to transfer a quirk to Deku. It could either be the copy of All for One that AfO gave him, so that he could put it to better use and perhaps undo all the damage that it caused, or perhaps Shigaraki returns OfA to Deku, though it could be a case where the quirk would have a blank slate, with Deku effectively being the new first user, replacing AfO's brother.