Question

now bottom of the tempo on Studio One is BPM10.

e.g.Logic is 5. ( some composer use that as ritaldando and fermata.)

to make compatibility editting with another DAW, I'd love to expand the bottom of tempo.

Answer 1

I even hope it can be as low as 0.1bpm

Answer 2

I hope the tempo range 0 <TEMPO <unlimited.
It is desirable that the upper limit value and the lower limit value of the tempo can be set in this range.