I see lots of "innovative" "never been done before" puzzle games, but they don't sell, not really. And forget making money from a whacky "arty" Indie game unless you are one in oooh 10,000.
So basically you're saying don't try anything new, just make clones of popular games and saturate the market. I guess BFG and other casual game sites need people like that to fill their "A New Game Everyday" motto.
Personally, I'd go with something original. Go out on a limb. Unless your sole income is games, then make clones?
EDIT:
How many people would instantly dismiss a new game because it isn't match three?
I don't see anything wrong with making a match 3 as long as it's different from the norm...something outrageous.