For the people who write and program these scripts and the technology behind it, here's an idea:
It would be great to be able to setup 3 steps of suction strengths for a user. Say you want "1" (lightest) to be at 20, "2" at 50 and "3" (most intense) at 85 e.g. Would be great if the Powerblow-script just cycles between these, mostly 1&2, just like how the real thing goes.
With "0" of course being where there is no blowjob playing in the vid.
Might be something for a far future. I don't know how difficult it is to do this. But I haven't seen anyone mentioning something like this so far. Think it would be awesome!