I saw it on a XD cinema screen Thursday night. It thankfully looked like film. Grain was intact, which I'm sure the clueless elsewhere will complain about. I was a little surprised how soft some of the original photography was. Shots in the second half of the film were much sharper.

There was one optical FX element wobbling right before Mr. Staypuft steps on the church. Everything else held up pretty well for a thirty year old film. I guess 35mm release prints concealed a lot of warts.

The colors on things like the library ghost, and the proton beams were vivid and beautiful.

For some reason, I never noticed Slimer has a huge buttcrack before. O_O

I think I've tuned out all the not so subtle Coke product placement all these years, (they owned Columbia at the time) but it's there. ;)

The soundtrack was respectful for a remix, (although I'm sure GB had a 70mm release?) and I didn't detect any modern meddling. For the first time, I was able to make out what tv show is overheard when the guys are searching the Sedgewick Hotel hallways.

For those of you who have never seen it, here's Zuul on Saturday Night Live in 1986. ;)

https://archive.org/details/SigourneyWeaverAsSexyZuul-ChurchChat