In a way, that's one of the nice things about living in the colder climates where winter lasts for 5-6 months. You have to put the car away for the winter (well, you don't have to, but you get the idea

). When you take it out in the spring time, it's like getting a brand new car all over again.
As for the differences between the C5 and your '93, I know what you mean. Even during C4 production, there is a big difference between the late eighties models and the early/mid-nineties models.
I have a '90 and I was amazed when I drove a '96 LT4 equipped Collector's Edition convertible. The refinement of the '96 was much better than my '90.
A couple years ago, a local dealer teased the hell out of me by offering to take me for a ride in a brand new Z06. Although I started foaming at the bit in light of finally getting a ride in a Z06, I was somewhat disappointed, as he took me for a slow, 2 minute cruise around the back of the dealership over a crumbling road that looked like it came out of Baghdad after a heavy night of bombing. My initial thought was, "what the hell was the point of that...", but in hindsight, it was an enlightening cruise.
My '90 would have gone into cardiac arrest at just the sight of those potholes. The Z06 practically glided over them. The difference between the two generations is like night and day.