I believe that a good part of my collection would qualify as from the "Golden Age."
I have said it many a time, and I will say it again: I really want a gen 2 Catcherman with bi-directional FRN, FFG VG10 (spyder edge and plain edge), and a 4-position metal clip. I realize that it would require new FRN molds, but hey, so did the original Catcherman. Lots of people seem to enjoy the larger blades (Military, K2, Tatanka), and a "slicey" option with and without serrations would be a great addition to the lineup, IMO. I know it doesn't necessarily fall in your time period, but I think it still deserves recognition.
Catcherman--mine is yellow and SE
Also, a sprint run of the C25 and C50 Centofantes would be superb. Maybe Super Blue blades (PE) and grey G10 handles? The old Centofantes are wonderful knives, and I think that a sprint would be well received.
Here are the Centofantes. C50 first, C25 second.
Here are a few of some other favorites from the Golden Era...
C27 Jess Horn--the hole-less classic, this one is, IMHO, the epitome of Spyderco's gents folders in the Golden Age.
C22 Swiss-made Michael Walker--many would argue that this would be the best high-end piece from the Golden Age. I love how lightweight it is!
C63 Chinook 1--opposite end of the spectrum from the above two...what a beast of a knife!'
C65 Bob Lum--mine is in blue, which (besides being my favorite color) seems to be at least a little on the rare side.
C82 D'allara Resuce--the World Trade Center version may be one of my most special Spydercos. It is very nicely executed, and the cause is deserving.
Lil' Temp--I like this one, but since I own a Golden-made original, I will probably pass on the new one.
This list could go on and on...but I'll spare you of having to scroll past anymore pictures.