A simple fix for a major source of annoyance of mine would be to add bar, 2 bar, 4 bar, etc divisions to the slicer “snap to”.
Or even better, offer the ability to generate slices based on the grid. I’m currently trying to slice up entire tracks with known bpms and the current way involves way too much clicking for my poor carpal tunnel.
The Chop Sample Tool is your friend here.
If you already know that your sample length is a beatsynced multiple of your bpm, this tool will save you a lot of time. Set it up with a hotkey in your keys preference, and it couldn’t be much quicker