IMO, F-Droid is light on written policy, and heavy on “if we don’t like it when we see it, we’ll do something if we strongly feel we should” and “we’d rather not talk about it.” They allow Tusky to censor Gab without anti-tagging the app, for example, and they posted an “explanation”.
I don’t speak for the Powers That Be, but I think the answer is: If you don’t “dirty” the repository with anything sensitive people would complain about, and you provide clear, accurate descriptions, then you should be OK. @hans would prefer you to use a separate repo’, however.
Here are a couple previous discussions:
Your editor app is great. Wish you would take some of the guts of your audio apps, oscilloscope particularly, and make a F/LOSS “shot timer” app.