It's just my 2 cents, that's all
I don't think a majority of model builders need that level of control.It's a case of spending more for things that will be seldom used...when a lesser model from the Iwata line for example, will do the same job.
military models are not the same as a high end super-detailed automotive graphic.
nothing wrong with those options, I just wanted to toss in my opinion that they are not necessity's
some newcomers to airbrushing may get the impression that preset handles and flow controls are necessary and spend more than is really needed