Unfortunately, this function has been requested for a long time for people like me who also offer 70s music.
Graphically I like this software very much. Maybe it is also the most beautiful of all the software out there. But it has too important flaws.
I have been using Rekordbox professionally for many years so I have a good benchmark.
If ‘Djay Pro AI had a library management similar to Rekordbox and’ the function of varying the grid as you say and ‘this Rekordbox has been doing it for some time would have much more chance’ to be taken into consideration as main software. If there is also the possibility of making a USB key to use with CDJ players and various controllers it would be like the icing on the cake. Maybe I’m asking too much?
I have not found a workable solution yet. Sometimes some fixes seem to work but then it turns out they don’t always work. Also, I am discouraged to put work in that will disappear when I change devices. We need advanced grid editing and we need iCloud sync for our beat grids.