I feel the same way, I love working with the MPC, but still if there is an ability to use a hot key to enable operating basic ops such as STOP then REC + PLAY Start, without leaving the keyboard this will be great when recording a synth part, I usually need a few attempts to get it right and having to take my fingers away from the keyboard to stop and restart recording is a pain sometimes.
esp if your keyboard is not directly adjacent to your MPC!
was it mp3 that recently found out that you can sample directly from input thru mode? for those whose turntable is not right next to their MPC, this could be useful as well. desktop real estate is a valuable thing. this feature helps.
this feature is not a flashy one but i guarantee you that it will come in handy when some of yall least expect it. like a lot of jj os features. i'm glad that jj doesn't lean towards that "BOOMBASTIC TRANSIENT BLASTER FX" type of feature and instead focuses on workflow with the occasional sneaky backwards sly devil feature like this. hell, even pattern mode is too flashy for me when i'd rather just tap it in quickly in 1 or 2 takes.
for sure, this new feature wasn't my must urgent feature request, but it's come up before on these forums and it's also breaking new ground as far as how MPCs can be controlled.