Not much into point and click personally, but I am into the 90's style graphics and sounds!
I liked the old edutainment like Word Rescue, maybe a grown up version of those games would be interesting.
Commentary on nostalgia being milked in recent years would be interesting for sure, I'm not sure how you go about that in game, but if you can pull it off subtly it would be better in my opinion.
I wasn't sure what kind of feedback you wanted, but i hope this helped. :)