Not allowing your users to set ANY search engine they want is a problem. Opera needs to become more open to suggestions and they really should communicate more with us. Tell us why you can't do something immediately. Tell us your ideas. Respond to our ideas.
I was here when they released Opera Mini for BlackBerry. Good times, so many discussions, ideas, the dev team was communicating all the time. These forums are now basically dead and I find that really sad. Don't get me wrong, I LOVE Opera, but communication is something they really need to work on.