I started using it because I was on a slow connection and back then, Opera was a 10 MB internet package. It had email, download manager, chat and everything.
I am not sure about these features but size is 29.7 MB! Curious, did it increase just because of brink?
And the overall look and feel is just Chrome. So I think people will skip Opera 15 and download Chrome instead. Or they will stick to Opera 12 like I will.
Strange. The new mobile versions doesn't get a lot of positive reviews and now this one. I hope Opera didn't loose track.
Also the kind of bookmarks "stash" is not searchable in search bar, which is not really handy
They've made tabs slower to open and have gotten rid of configurable keyboard/mouse shortcuts -- it's now just Chrome with a different skin.
The size increase is due to a complete rewrite based on chromium.