Not sure what all that means. The EasyTouch has (I think) 6 or 7 aux relays. Single speed pumps are just electric motors. They hook to relays of any kind unless they are two speeds. They run on 110 or 220v AC service.
But like I said any two speed pump should be able to be hacked for any two speed pump controller. It's just electricity and electrons are all the same. There are different voltages but that can be accounted for,
So again, not sure what you are saying can't be done by EasTouch outside of the Pentair line.
My point again about Easyouch is that it is a fancy relay board with add on features like scheduling, egg timing, and remote control via wireless or SceenLogic. You should be able to hook any base hardware to it and be fine with minimal (if any) mods.
What I'm trying to say, and not doing a very good job at it, is that you are half right and half wrong. I agree whole heartedly that the EasyTouch controls most things with relays and as such it can control anything that only needs AC power applied to turn it on/off, no matter what brand it is.. But if you have a different brand of Variable Speed pump or Saltwater Generator, the EasyTouch cannot talk to those products and control them. Most VS pumps and SWCGS are controlled over a communications bus and not just turned on/off. While it could turn them on/off, that is not what automation is all about. You want to be able to read the SWCG and see what the salt reading is, you want to be able to adjust the cell's output by pushing an icon on your computer screen. You want to be able to adjust the pump speed up or down using an icon.. You cannot do those things unless the automation system can "talk" with the pump and the SWCG. For the most part, various brands of pool equipment will not talk with one another.