From my perspective, the Mirage is a cheap economy car, and I paid what I did with that expectation in mind. I could have gotten another car, but I wanted to save my money for other things.
Spending money on changing the suspension goes against that. There are posts that suggest lowering will wreck alignment though not many owners will admit to it I suspect due to confirmation bias.
As a platform, the Mirage is not a sports car. It is designed to be cheap, reliable transportation. If I wanted a sporting driving experience, My money would have been better spent buying a car with that design goal in mind.
So why change yours? I don't get it.