I would certainly expect that fit-to-width would be an essential feature for the future Android version. It's already been mentioned in this thread that mobile browsing in Chrome is just crap. Ironic, then, that that's where everyone is "going" these days... :~(
(I've had to finally abandon Opera "Classic" for Android since it caused memory issues and then when I reinstalled it it no longer synchronises my old Opera bookmarks.)
Also, I can't stand all the additional, inaccurate, swipes and clicks you have to do for e.g. tab management. Compared to Opera Classic, Chrome UI is a mess!
Can't wait for Android Vivaldi...