I simply love the browser, it is a joy to use!
But a little thing, which would definitely make me switch to Opera GX as a primary browser would be to have the oppertunity, to change the download files view between list and tiles, kinda having it work like grids in html/css.
So it dynamically wraps them to the next line, if the width of the browser window is not wide enough.

Besides that, keep up the good work!