When using more than a couple of effects in a track, I find myself scrolling left and right a lot (luckily, mouse wheel works nicely here).
I think it will be very nice if there was another standard button on the top left corner of each inserted effect, that will collapse the effect slot to the minimal width possible.
It will be even nicer, if the right click menu of each effect will have functionality similar to the one in the mixer tab, where you can choose which sliders you want to view.
This way, you will be able to have tracks with many effects in the chain, where most of them are collapsed, and only the ones you are still working on, are expanded.
In addition, this will provide another nice functionality:
In VST effects where there are many many sliders, the obvious way to edit them, is to open their external editor. Since they have many controls, expending their sliders inside Renoise is impractical.
With this “View” right click functionality, you will be able to select only the sliders you are interested in - and never have to open the external editor again.
Easier to control, easier to automate and less cluttered on the eyes.