I think this might need to be carefully reconsidered. (I like the idea that it should be easier to make Daily Notes with arbitrary dates.)
Right now, Open next daily note and Open previous daily note navigate between existing notes, skipping any empty days. This assumption was discussed here: Hotkeys to go forward or back a day in the daily notes folder
If those commands created empty notes, then it would make navigating between sparse daily notes harder.
Perhaps an alternate command should exist. Such as Create previous daily note and Create next daily note
Some other ideas would be an integrated create command that brings up a date-picker that would then format according to your Daily Notes plugin settings.
There is already some other discussion about plugin ideas to add a calendar widget to Obsidian. Example: Calendar view for daily notes
In the meantime, there have been some hacks to mimic calendar functionality, which you might find useful: Calendar and tasks for daily notes