I was there at the beginning and it was great at the time. That is, of course, based on what we knew and what we had to compare it with. TNG etal are orders of magnitude better. It is hard to believe that FX can get any better in the traditional mediums. It may take something like VR to improve the scifi experience.

Some of the original Trekkie things like the theory of parallel development (Nazis, Romans etc. on other planets) were as ridiculous then as they are now. The scripts were frequently weak, as they are now.

Hard to say what 30 years will do to TNG and the others. TNG must be getting close to 15 years now and it doesn't seem that dated. I certainly hope they will be dated. It is depressing to think otherwise.