one short suggestion for the Darktime:

The reset/stopswitch per step too narrowed down in its function. I
suggest that this switch should feed to trigger/gate busses which is
available at a 3.5mm socket at the rear (similar to the A155). These
busses can be used for accent control or other triggers (drum sounds,...).
There should be a single switch in the lowest row, which selects one of
these busses for the corresponding stop/reset function.

Florian