1) This isn't an answer to the question, this is a "whataboutism".
2) "Zone" isn't a defense in itself. You're referring, most likely, to the days of Tampa 2. Which has also been used very successfully elsewhere, including by Dungy. Personnel>>>Scheme.
So again, please explain why "zone" sucks, and if so why does every NFL team probably use it for at least one snap every game.
I predict a lot of finger pointing after the game.
I predict a lot of ________ is trash, sucks, garbage, etc.
I predict a lot of "This will be Ballard's defining draft".
I predict a lot of bad spelling, lack of grammar, and the inability to proof-read.
and , I predict that I will once again, enjoy watching my Colts, regardless of the outcome.
The future is bright, I love the owner, GM, and coaches....and I think they are doing a pretty good job as they learn their craft together, considering how this year has unfolded.