It can be difficult for people not familiar with grid-sequencers to mute or un-mute a track precisely on its first step, while others tracks are playing. Starting on the wrong beat can also make for a messy recording.
Allow the user to “queue” mute/unmute by long-pressing the Mute pad. If the track is currently muted, this will unmute it right after its last step, or vice-versa. This could be acknowledged to the user by blinking the Mute pad for an instant, after/during the long-press.
Note that Shift+Mute is already allocated (to show steps 1 to 16).
This feature request could also apply for the Solo pad.
The known workaround is to set the track to an empty variation, then select the variation that contains the actual notes, so that it is resumed at the end of the track. The issue here is that there is no way to see the notes when in “variation” mode, so it is easy to confuse tracks.
For example, consider the situation where the user is already playing track 4 to 8, and they want to bring track 2, 3, and 1, but one at a time and on the first step.
Doing it from the variation mode, the user can allocate the last variation to be the “empty” one (see below), then select the first variation on track 2, 3, or 1 to make sure it plays on the first step. They would have to remember exactly what these tracks are though, which is much easier when they can see the notes.