Okay, maybe it isn't nostalgia, although it is for me. But do you and your players want the same things?
Sometimes I read about awesome games, or awesome settings, and I wonder . . . does this guy really have the players for that? Is it just you that wants to run a gritty-realism Dark Ages game? Is it just the GM who thinks humans-only and limited level advancement is cool?
Maybe a low-tech, human-only, gritty post-apocalypse game would be fun, but your players want Thundarr?
Or take it the other way. What if you want Thundarr, and your players insist on playing out a gritty zombie movie. "You find a sword hilt that bursts into a flaming sword!" "Okay, we scrap it to power our anti-zombie searchlights."
If you're playing with folks who grew up with Diablo, Planescape, and all those monsters-as-main-characters games of the 90s, will they prefer more of a "freak show" party more than you?
This is all ideally worked out pre-game, either with "you guys do whatever, and I'll adapt" or "here is your list of options." But sometimes you end up needing to work it out in game. I love complicated monetary systems, detailed treasure, fast-and-loose combat, and ruthlessly fatality-filled games. But I know my players don't care as much about the complication, like tight combat rules, and prefer a bit less assured PC death. So I have to modulate what I include - it's not just my nostalgia I'm catering too on Sundays.