A petition is a lost cause. Even the founder of Opera agrees http://www.theregister.co.uk/2014/02/07/opera_founder_its_all_gone_to_crap/

Enjoy Opera 12 as long as it lasts, meanwhile pick another other browser and try gradually changing your browsing habits. No developers will respond to your petitions and the neo-Opera fanboy-evangelists will rush to defend how Chrome-with-different-skin (aka Opera 15+) is a better browser.