Hi,
Regarding this problem: https://forum.renoise.com/t/midi-inputs-disabled-while-rendering-in-realtime/44774
I would like to suggest that you add 4 midi routing ports, with a midi channel filter “input/1/2/3/4/5/6/7/…/16” that simply send all the same. they also could send on the same midi channel as the Input (currently it seems to be 1 always?) if “input” is selected. If 1-16 is selected, they would only send on the selected channel, if the Input channel matches.
This would open really nice capabilities of various midi splitting and also would work for rendering.
As bonus, you could add these routing ports to midi instruments, too, so it would be simple to trigger multiple vstis only using one track.