Mr. Fred - thanks for your insight. Perhaps we can compare Apples to Apples.
The Harley two-wheeler rides just as nice as any Wing, in my opinion. Since Honda does not make a trike, one has to add the kit from CSC, Roadsmith, etc.
Well, let's out the same kit on both the Harly and Wing - now compare that ride. My bet is you will get a pretty equal ride - just as smooth.
Now to the main question of service. I think you are more likely to get better bike service from the Harley dealer than the Hinda dealership. In my case, my dealer has already said he would work on both the bike and kit (if the kit issue is simple (wheels, tires, brakes, etc.). Probably because they already have most of this stuff for the TriGlide. Not sure if the Honda dealer can change the trike wheels. etc.
My Harley dealer installed TPMS on my trike wheels. Also changed them out when the correct wheels came in from CSC.
When I had my Wing, I use to go to the local tire shop for wheels, brakes, etc.
Bottom line - am hopeful the OP gets his concerns addressed and is able to get what he wants.
I agree with much of what you said except for the ride. Solids axles, regardless of the make, ride like a truck, especially on bumps. I have experienced that myself and virtually everyone who has ridden both tend to agree. I watched a friend of mine hit a hole in the road we were traveling on and he almost turned over and my ISP took it fine. That convinced me, and him.