considering that opera does not allow custom search engines at all i think there is a serious case for orion ios to implement a fast action button. for those that have never used it, the fast action button makes it very easy to browse one handed. im not doing a great job selling it so here is an an article by opera going into more detail.
example: https://help.opera.com/en/touch/fast-action-button/
as far as implementation is concerned it would be a floating button that appears at the bottom and upon pressing and holding, a radial menu would appear which would allow for recent tab switching, tab closing, tab creation, accessing settings, and maybe a share option (opera has a 'send to flow' since syncing is more of a manual operation in operas ecosystem).
