Thank you for play option, this is something i was request long time ago(must have). But want to ask you is possible that youtube videos be played in browser instead in youtube app?
Also, you need improvement on scrolling trough page when you are not in extreme saving mode, if you test scrolling on sony experia e1, you will see that scrolling is not that smooth in opera mini as in opera for android..
I dont know exactly what problem is with that browsers, probably ram.. I was try different browsers, and all have problem with scrolling(scrolling is not smooth), only opera and chrome are better, but not too much, example, if page are very large, then if you scroll down while java script loads more elements scrolling becomes choppy, and browser at the end crashes..
I know that this can be fixed, example when java execute command for loading more elements on same page, you can do, that instead that(adding elements below), browser opens new page in same tab?
In that way browser wont crash, and you have smooth scrolling, and you dont have ram issue..
You can do this for users with low ram phones, question is, are you willing to do this?