this has been suggested at least 3 times that i know of. all 3 were kinda different suggestions but imo amounting to the same thing. the most important one is a Sticky on Audio Tracks: https://forum.renoise.com/t/brainstorming-audio-tracks/24794
other ideas were to have a line indicator in the sample editor to show your position in relation to the pattern, and some other stuff i forgot.