My suggestion: I like the option "General > Results > Close window on execute", I always use it as it makes general workflow faster and cleaner... but from time to time, I really miss the option to let me prevent this window from auto closing on certain cases... something as simple as "if you hold down SHIFT while you execute an item (eg. by pressing SHIFT+ENTER), then Everything will execute the item and keep the results window open".
90% of the time the usual workflow is perfect: shortcut to open Everything > type something > find and execute > auto close > me loving the tool
but those occasional times when I'm searching for something very specific with after a very refined search which is narrowing down the number of results... then I'm browsing the results... I think I'll possibly want to open a couple of them... but when I execute one, then the window closes...
oh no! I'll have to open it again to repeat the search and remember where I was in the search results list...This simple and small addition would be a big quality of life improvement, so I'd really really appreciate to have it in the next version of Everything.
Either way, thanks a lot for this amazing tool, you guys rock ♥
I've just set it up and it works like a charm! Thank you so much!!! 
And thanks a lot for the quick response too! 