I doubt it would amount to a better product - a safer product perhaps, sure. If you think pre-cooked and frozen would make a better product than fresh and freshly cooked.. then we have different ideas of what better means.
These are not sodium and preservative-laden frozen meals we are talking about. These are products made in large commercial quantities for quick preparation.
I do indulge in Taco Bell from time to time and, let me tell you, I'd rather have the food prepared by a quality-controlled system than the stoned kid in the back that may or may have not remembered to add the seasoning when it was time.