The ability to move or copy an individual track to other patterns and songs would be useful. I often want to merge a couple of patterns together after jamming some ideas. Ideally with the option to copy just the notes from a track so it could play a different sample on another pattern or with the original sample attached
Yes indeed. I was going to post a feature request for this.
I agree that this would help the workflow. In the meantime, a fairly simple work-around is to make a pattern copy, then delete the undesired tracks while leaving the ones you wish to remain.