Back in the days, achieving stretched sounds was done through the sample offset command (9XX, now SXX), placing note events all throughout a track and iterating through the offset creating a distinct often metallic sound. Using it in combination with variating the speed/bpm commands or notes you could/can do interesting soundsculpting, effects.
The only ‘drawback’ is that it takes some time setting up, expanding the pattern/doubling the speed for bigger resolution, placing notes/ pattern-commands & interpolating the values between minimum and maximum (oo & ff).
It isn’t that bad to set-up, but these are steps that could be scripted, made into a tool for easy of use, better flexibility imo.
Example of what an envisioned tool could do is:
(Temporarily) create a new pattern, filling up the selected track (where the cursor resides in pattern editor) with the selected instrument in the instrument list with base note c-4.
Use current settings or be able to set up pattern length, edit step length, bpm & lbp values in tool gui to define stretching resolution.
Auto render the newly created pattern to empty sample slot in instrument, then optionally, afterwards delete the pattern.
I’ve put up an example of offset-stretching here: