Recently i was wondering how one can improve the naturality of instruments in openMPT (i think it sounds brilliant and nice, but somewhat sterile, if you are not a very talented tracker).

My suggestion for improvement is to have "blended" multisampling available for instruments.

Principle:
for example 2 samples are assigned to 1 Instrument one for the lower octave and one for the higher
when played
based on distance "played note" to "middle note of sample 1" volume of sample 1 is calculated
based on distance "played note" to "middle note of sample 2" volume of sample 2 is calculated
**
both samples are played in parallel

possible implementation:
1 - eat up one fully additional virtual track (now we all have the computing power ;-)
2 - eat up one partial additional virtual track (possible to "get in" prior to all effects?, imho more tricky and possibly buggy)

• i know for more samples with different ranges (assigned notes) it's a bit more complicated but it's still plain linear math, resulting in an additional look-up-table per instrument calculated on loading of the module or prior to playing
  **for more samples always between the two neighboring samples