The original show at Universal didn’t utilize the actors’ likenesses right?One problem with a ride/attraction based on the original Ghostbusters is their age. Unless they do it like the 90s & have lookalike actors rather than screenbased footage. Even queue video.
However, if they set it to modern day, you can have them reprise their roles in the mentor capacity. Rip-off/Copy the Transformers & MIB gimmick of us being the "new recruits"