Since there is already a function to interpolate effects and the like, why not extrapolation?
It would work (in theory) like this:
1. You select a note, Effect, or volume.
2. OMPT analyzes the interval between that note and the one before it.
3. OMPT extrapolates until the maximum is reached.
In addition, I'd like to see this:
Waveform Extrapolation:
Essentially similar to an LFO, the waveform extrapolator would allow the user to select the waveform, effect, maximum and minimum parameters, and speed. Then OMPT would extrapolate, essentially, if you were to view it in "Visualize Effect", it would appear as the desired waveform.