When adding additional mixer channels/outputs for VSTi instruments, please allow users to check the box for multiple channels/outputs on the instrument with a single click and drag of the mouse. Not a major suggestion, but I think of Studio One as the "workflow DAW" and this is just a simple suggestion to reduce mouse clicks.
Example: I load up a drum instrument like BFD3, and want to select Stereo Outputs 1-4 and Mono Outputs 1-11. In the current iteration of the channel selection dialog, that's 14 mouse clicks. If we could click and drag to paint/add channels, I could get that down to 2 mouse clicks, which is a big improvement.