Note Duration instruments specifically

How to regulate the duration of notes Instruments specifically?
If the length changes in “Playback Options – Note Duration”, it affects all instruments.

Instrument-specific preferences for note durations, etc., is one of many such features I hope will be added in the not-too-distant future. For now, unfortunately, unless I’m very much mistaken, the only way to change this on a per-instrument basis is by altering played durations in Play mode, which can’t even be done in one go by selecting all the notes played by that instrument, as you’ll very likely be making different alterations to normal vs. tenuto vs. etc.

And of course, such changes will be specific to the project, rather than a preference setting that sticks around when loading new projects.

If I’m wrong and there is a way to do this now, I will be overjoyed when someone points it out to us!