raser1 That is correct - we do have a large variety of toys to consider with our scripts and overall we focus on more feeling over exact movements, especially as on screen actors have much more unique penis sizes compared to average user.
Having less differentiation of strokes can potentially cause a bit too much 'same-ness' and robotic feeling to scripts if we aren't further careful
Hopefully we can employ on the fly 'cum mode/extended range' soon that should help those like prefer more full strokes throughout (and dont mind the inherent potential risks/quicker sessions)
Rather than needing to measure oneself, maybe being able to cycle between 'small/medium/large penis size' script presets where script is auto adjusted accordingly (and be switchable on the fly) could be a good idea?