Just downloaded 401, first time actually using this software.
I have no doubt my use-case is a little unusual, but as I begin tagging my collection (a scant 2,000 images but I want to be able to find old vacation images but I can't remember which vacation it was) I find myself wanting to remember if I tagged this aspect before, and if so how I spelled it, etc.
It would be very helpful if I could find a list of all extant tags, but the closest I seem to be able to get is to stop tagging, search system:everything, choose no particular image, and scroll up/down the left where the associated tags that overlap with the current image search results are shown. Then I have to write down the one I used last time, then go back to system:inbox and find what I was about to tag.
It would, as I say, be useful if there was a toggle I could throw, that would populate "recent tags" with instead "every tag" although if the client is allowed to sync with the PTR that list would be both ponderous and useless. So, maybe a toggle for "all *my* tags"
On an unrelated note, and a note of thanks, it took me some time to find how to search for images by their ratio. But I'm very grateful I don't have to create a namespace of 3, with a single member of 4, just to indicate I tipped the camera on its side for that photo.