I have a Ridgid shop vac hooked up to a Dust Stopper cyclone that I use on my TS. This arm would be used for: above TS blade to get dust that comes out that way, router (hooked up with hose from router to arm), sander, (also hooked up with hose), belt/disc sander (place suction hood on arm next to where dust comes out or hook up to hose coming from dust port), bandsaw (hooked up to dust port), and belt sander (hooked up with hose).
I don't have room to run pipe or put a bigger DC anywhere. I do like the idea of a smaller DC as shown above; I can hook it up to the cyclone and get more flow. But, the pipes are 2.5", so it may not help.