Good suggestion, thanks!

Thanks for the report!

1-5) Confirmed, will be fixed.

6) This is by design to avoid deleting formatting by mistake

7) I don't see the problem here. Just don't use monospace formatting if you don't need it. If other cases, it can be handy to have a different monospace style. Disabling monospace formatting altogether when the note font is monospace won't bring any extra benefits IMO.