about panning: i always have the issue that my track feels unbalanced with respect to the panning whenever i start trying out panning settings. like it is leaning left or right, if you know what i mean. i know this issue can be resolved by carefully re-balancing stuff, panning other stuff to the right when you got too much weight on the left side and such, but i find it quite difficult to do. proper panning is an art in itself.
because of this i often just do either a Phaser with Autopan preset (customized), or an LFO attached to the pan setting. when you have something like a short-note instrument and you want to make each note pan left then right, so go left-right-left-right-left-right with each subsequent note, check out this thread i wrote some time ago: https://forum.renoise.com/t/sorta-auto-pan/32680 (that thread has my own method as well as an additional bonus method by dblue!)