A native, dedicated ‘sample editor fx - panel’ would be sweet. I remember there was a suggestion for improving the sample editor in general some time ago… (check: here ) I think this suggestion would fit right in.
BRAINSTORMING
This could probably be automated to a degree with an appropriate lua-scripted tool. A tool, when launched, could set up a dummy track for fxing purposes which could be discarded afterwards. (or just plain muted, maybe?..) I think dsp chains could be loaded/saved by a script too, but this can also be done through the native GUI. Effectively this dummy track could function as a sort of ‘fx-panel for sample editor’… Hmm…
/BRAINSTORMING