Not sure how much of a good idea this is, but how about an option to have the Sample Instrument flash when ever it occurs on a track on the pattern editor that the cursor is on.
In the sample editor, we can already see the position bar play through the sample when it occurs in a pattern.
When I have a load of samples with esoteric names in the sampler, it is hard to figure out what sample is playing in what track.
So, some way to show what sample is playing in what track would be good.