Going to be blunt here. I have 20 years dealing with car dealers and sometimes their customers, and get to see good/bad on both sides, so this kinda stuck a nerve. Yes, the dealers are guilty of some evil, blah blah. But in my experience, when there is some after the sale issue, it's usually the customer trying to get over on the dealer, or just being completely unreasonable. You wouldn't believe how often a customer will claim the dealer scratched their car when having an oil change or even a car wash.
Anyway, it's obvious that your issue is with the dealer, not the car. So I think you are looking at any possible nitpicky excuse to hate on the car. So that has to be separated from the vehicle. I mean, come on. It's hard not to laugh, seriously. Here's the list of what makes the CX5 a "pos" as you say: Piece of protective sticky film left on the rims. Somebody scratched the paint. Not enough washer fluid. Too much air in tires. Doesn't have your first choice of plastic on door panel. Dash plastic planel can be flexed? (I haven't noticed this... how hard do you push the button?!)
The shaky mirror and maybe the seat clips are the only things on your rant list that is much of a real complaint, and both minor issues apparently have already been addressed by Mazda. I've seen the hood flex too, but only when passing a truck on a two lane, or in horrible windy conditions on the interstate when a gust about knocks you off the road. It's not a BIG thing, just a curious quirk. I noticed it the first day I drove mine, but didn't notice it on our 3500 mile trip unless you really look for it. Mazda special easy scratch paint? Come on now. If a moonroof is a must-have, then buy one that has it. This doesn't make a car a pos, has nothing to do with mazda vs honda, and certainly doesn't belong on a rant list of "issues"...... for any vehicle. Maybe there will be some more serious flaws show up in the cx5, and no doubt that someone will end up with a lemon.... but the list of concerns here is no reason to slap a "POS" label on anything.
Can't imagine wanting to go back to a Fit, even if the CX5 had 10x the list of issues. Look past the very minor concerns for a minute and maybe you will actually like the Mazda, even with it's horribly underfilled washer fluid reservoir and 10% over inflated tires.