Clay...thank you for coming here and presenting your perspective. I'm sorry if I hit a delicate nerve. Not intended.
At the same time these units are approaching the price of a Tormek. The Tormek is still considered the Gold Standard in sharpening. I've been close to buying one often through this quest for a better edge on my cutting tools. Keep in mind, it comes with a motor. That is a considerable underlying cost from a fabrication standpoint. This alone makes the Tormek a value not to be ignored.
The angle does matter. And, yes, there are many Japanese knives that are thin enough to cause a problem. I bought (as gifts) several from Jantz to build that are .078" thick. Forged Damascus. Utterly georgeous blades. Matched with G10 make them lifetime cutting tools. Yet, how will they be maintained sharp? That's part of my process here. 10 Degrees will not be uncommon with these blades. And, many others to follow.
I'm glad to hear you have upgrades coming. I would strongly consider the WE had I not invested for an improved and more varied machine. The tutorial that ChangeOfSeasons wrote on serration sharpening should have impacted you and other manufacturers. He developed a good system that someone should be incorporating into their system.
As of this time, the available serration sharpening systems are pitiful. Not that it's not out there for you. You all see the need...yet...no solutions. You could make money on a thought out offering. This forum has some great ideas and some folks who really think through the process. I'm glad to see you're listening.
As for the SS, hope to see it. Yet the cost differential shouldn't be much. It sure isn't for me.
It's the pivot that's going to be your problem. I'm sure you'll figure that out.
Thanks Clay and good luck!