@themotorizzer sorry I missed this.
We’ve toyed with the idea of smaller durations, but as you can imagine the UI is super frustrating trying to mouse over small notes.
I agree that adding new time signatures sort of gets us there, but don’t love the idea of time signatures (8/4, 16/4) that aren’t really in the spirit of the musical function of a time signature. Also we would have to infer a musical meaning to these time signatures when we create rhythms for our drums and rhythmic harmony and bass instruments, which runs into the same issues that @qclod is bringing up.
One solution to this would be for us to build in the ability to have double-time and half-time feels for Hookpad drums and rhythmic instruments. This seems like something that could bring in a lot of more flexibility, in addition to allowing you to effectively have faster notes.