Miracle Whip is NOT mayo.
No its not. And no one said it was. Miracle Whip is to mayo as ketchup is to marinara. They are similar colors, have the same base ingredents and are used similarly, but have wholly different favors, calories and aren't exactly the same color or consistency. And if people try MW knowing its not mayo and should not taste like mayo, they'd probably like it. I actually love both as condiments.
I also second chipotle Tabasco.
And thai red curry paste - sure it makes a great curry mixed with coconut milk, but its great mixed into other condiments (like mayo or MW or sour cream) for a great sandwich spread, salad dressing or dip.