Thanks YT made it sound a little harsher than it sounded here, and I did have the strength a little high so the effect was obvious.
I'm going to abstract away the script on the buttons [ with multibuttons, again, 3rd level of abstraction, I'm one typo away from getting lost] Add in my loop /single shot mode button.
I think one of the tricks I used keeps the rsi timing pretty tight, I might yet investigate some maths to play chase with the fuzzy rsi time but I've not noticed any slip even over 5 mins continuous.
I sent phantom an earlier iteration [buttons are only single shot, and big free hand slider works] If you're curious, nothing here you couldn't do and do far better but I guess this a good enough prototype to try the concept.
@EVERYONE I'll make some more noise once I've got a few odd ends sorted out, a dl link available to anybody who wants one.