Interesting! Personally I usually prefer steady things, but too much sounds triggered at the same time can be problematic!
I recently used the opposite : different ends for tuned slices for tuned sampling!
If I want to make a tuned synth with incoming signal, whatever the tempo is, I use different slices, all placed at the beginning of the sample (yes, possible).
Ex : C = 674 samples, G 450 samples.
Slice mode.
Change LEN=TIME for octaves up (128 / 64 / 32 / 16 / 8 / 4 / 2 / 1
Weird example, crossover between incoming signal and realtime sampling, pitch determined by slices. 
Number of samples.