The Comic Chronicle Podcast did in interview with Erik Burnham a few days ago and posted it on Monday. He does give away some tidbits about Year One #2.
https://comicchronicle.podbean.com/e/is ... -and-more/
--And in the second issue, the author, she's asking Ray, 'So I'm doing my research, uh, the thing about the ghost in the library that you first guys got, did you ever go back?' And so in the second issue, we have them go back and go after the Librarian which you know they did that little bit in the game but we're going about it a different way.
--And I've seen, uh, Dan Schoening has just turned in, uh, layouts for Issue 2 and they're going to blow some minds, some crazy stuff he's drawn in there.
So looking back at the A covers. One would think this all means Winston's first bust was the Zombie Taxi Driver, since the Librarian is on Ray's cover and is the subject of Issue #2. So looks like Issue #3 is something about Slimer - maybe trying to recapture him after the first movie? And Issue #4 is likely about the first time they captured the Subway ghost.