Well, I read your 3 other threads that consisted of 80% whining and I discovered your problem. You upgraded from Opera 12. Opera 30 does not replace Opera 12, it is installed beside it. This is so users that actually know how to use a computer can use either version and not come here screaming about how everything has changed. If you didn't import your bookmarks, well that why would you expect them to be in Opera 30? Read the dialogs next time. You can still import them into 30 from the Settings menu. One way to access that is by pressing Alt + P on your keyboard. If you can't manage that come on back and we'll hold your hand through that too. Meanwhile your Opera 12 install should be untouched, with all of your sessions and bookmarks and everything still there.
Well, I don't know what to tell you. Obviously there is a limit as to how much they will put in the drop down bar. Probably to make it fit for people on lower resolutions. There might be an extension out there that solves your issue but I don't know of one off hand. I guess you'll just have to memorize the letters of the search engines you've defined. Maybe preface them with a letter and a number. Like, if you have three search engines you use to find subtitles you could label them 's1', s2' and 's3', or something like that.
Appreciate the kind input, in fact I DID find an extension::
"I ended up adding the "Search Center" extension, which does exactly what I want in as many search pages I define for it."
Opera 30 does not have native session support. There are extensions that added session capability though. I use Session Buddy myself. It blows the old session manager from Opera 12 out of the water. If you use 'Download Chrome Extension' you can added Session Buddy to Opera with no issues.