Thanks for a really great product that is the TimeFactor.
I'd like to suggest increasing the feedback levels to 120. This would allow the musician to increase the rate at which the delay 'climbs' to that lovely noisy tone. For example, pulling feedback down to 30 and then suddently pushing it to 110 results in a certain amount of cycles to pass before the tone gets real dirty. It seems like being able to push the feedback up to 120 would speed this up.
For example, the TC Electronics Nova Delay feedback goes to 120, and it sounds faster at reaching that dirty feedback tone.