As the title says, right now the feature I would love to see would be able to have constant indexation of the resolution of images!
I have hundreds of thousands (and sometimes over a million) of them I wanna sort through to easily find and eliminate the ones that are way too low in resolution (and often are dupes of higher resolution version).
Not only it takes hours for it to sort through those, but I also gotta be super careful to now do a search, or try to open Everything through the context menu, or not do many other kind of manipulations that would cancel hours of processing.
Also it keeps me from having the flexibility to just suddenly decide to focus on a subfolder when I realize a somewhat higher concentration of low res dupes are there, because I know I'll have to redo a chunk of processing there that'll take a lot of time, but also that I'll lose the massive amounts I already processed.
Also keeps me from narrowing my search by file types or any other means sadly, without requiring again many hours of processing.
(Which when you think about it, ain't really economically or ecologically efficient since it uses more power each time and uses up the drives much more than would be needed!)

Also additionally, videos resolution and length would be a neat addition too I think. (In fact I'm surprised we don't seem to have the liberty to add many more categories to index if we want to? I wonder if it's because they come with their own challenges in terms of coding them in and maintaining support? I would presume so!)
But by far the one that's be a big upgrade would be simply able to index the image files resolution. (Although I feel since it's its own category, it'll do so for videos too. Which I wouldn't complain that's for sure hehe.)
Also it's a really good way to quickly find image files that are broken/corrupt (when they don't have any resolution info, since they pop right at the top! And you can quickly select them all and delete them! ^^).
Anyways, apart from that I just wanna say I love the project and appreciate all the hard work and wish I had the means to donate!
Hopefully one day I will!
Even if the things I asked for never get added. (Beggars can't be choosers after all hehe. xD)
Have a nice one! <3