Since you now reverted to old delay devices and so have a change to improve the new ones in future releases, I would like to suggest to sync to note lengths instead lines.
In this way the delays would start to be lpb independent. If there were values like the usual “1/2, 1/4, ,1/8, …” It would be also imo a much more musical way.
I would to also suggest the following:
more filter types in multi tap, I believe butterworth would be very interesting!
“relative panning” option / checkbox, so panning would be relatively added to feedback buffer… I imagine that would make panning movements possible…?