On iOS, when using the BIU keyboard there are some buttons that have a dropdown (long press) option. I’m not sure if you have any additional plans here, but I’d love it if these “remembered” the last used action. So for instance, if I used “time only” in the date button, then every time from there forward if I pressed the button it would use time. Then I could switch it to something else for a little while by long pressing and selecting a different option.
I guess another alternative would be to have somewhere in the settings that these could be configured, but that seems overkill for my usage.