I'm impressed at your ability to judge the tools from the display demo models cable tied to a shelf.

That is what you did isn't it? I mean you can hardly see the tools themselves with the overkill anti theft packaging ICON uses.
I have a few ICON tools that I bought. As I've said before ICON probably won't inspire anyone to to replace their current selection of tools but, you may supplement what you have with some ICON stuff.
Here are my observations on your ICON opinions:
RATCHETS: Every one here knows there's a recall on the 3/8 flex heads. The jury is still out on what Harbor Freight's redesign will be. The semi hard soft grip needs work, there aren't any wings on the rat tail handle tang to retain it and it relies on a dollop of glue to secure it. However, i've found the all metal handles to be pretty comfortable. With the ICON fixed head ratchets, it seems that they either work real well or they're pretty stiff.
SOCKETS: I'm going to have to disagree with you on the sockets. However, i only own the ICON 1/4 metric shallow set and the set i have is nicely finished inside and out. To me the knurling on the socket's base is purely to identify it as a metric socket. If you want deep knurling Gearwrench, Sonic, OEM, and Carlyle have some excellent deep knurled bands on their chrome sockets.
Wrenches: To me ICON's non ratcheting combination wrenches are twins of Carlyle combination wrenches with the v throat anti slip open end and without it. As for the ratcheting combination wrenches, if you're looking for a six point fine toothed ratcheting wrench, look no further than Tekton or Carlyle. The two things I like best about my ICON metric ratcheting wrench set is that one, it's an actual 12 point ratcheting boxed end. Not spline which is very popular on other brands. Two, the wrench's long overall length. Yes, they might be too long in some situations but, I like the extra length with the 15 degree offset on the boxed end. I have plenty of other lengths of ratcheting wrenches to work in other applications. The anti slip open end on the long ratcheting wrenches is a copy of the version found on Taiwan made Proto chrome ratcheting wrenches and Dewalt ratcheting wrenches, might be the same supplier.
Another observation about the ICON tools flying off of store shelves. There weren't that many ICON tools on the shelf to begin with with.

Take away all of the recalled 3/8 drive flex heads and the shelves are kind of bare.
My local stores started off with Several types of ratchets across three drive sizes, shallow and deep chrome sockets in metric or SAE across three drive sizes, combination wrenches in SAE or Metric, with or without anti slip open ends , stubby wrenches, stubby ratcheting wrenches, long ratcheting wrenches with or without anti slip open ends in both SAE or Metric. What are we talking about a three foot wide section of two shelf units facing each other? Add to that, i think most stores only got a few of each item

The ICON stuff is a very small footprint compared to everything else in the store.
Lastly, no one is holding a gun to your head forcing you to read any ICON tool thread let alone, buy any ICON tools. Vote with your money by refusing to buy any ICON tools and don't even walk into a Harbor Freight store since the mere sight of an ICON tool may cause your blood to boil.
In the end, ICON tools are just another choice. I doubt if any one really thinks they're getting Snap on quality but, you never know. I know that time will settle most of the ICON debate because, the tools will either perform well or they won't