Maybe someone which is not into electronic music does not understand this request and it's kind of difficult to explain it's benefit.
Similarly to ableton live which has this feature in its wave editor (and other DAWS) ..
We can set the loop points position by dragging them and this basically loops the inner content to fit the item length and it is amazing how easy we can find and get surprised with polyrythms and find interesting material to use on our tracks , .. it just happens , . .. easy easy !
Of course we can do the same without dragging and do it manually example: fix a new length of audio material and move item contents but it looses the magic of unpredictability and so unusable for the purpose.
So the request is :
A modifier for dragging the section points on the items and in realtime this settings being applied across all wave length
