Spelljammer

I have this serious love/hate thing with Spelljammer. Spelljammer's cover is all like "hey guess what all of Kepler's first ideas were correct and phlogiston theory is real fuck yes get ready for 15th Century voyages on the high seas only in space and prep your buckles for swashing only there are DWAAAVES" And then you open it up and read it and what you get is an elf in a Guyver suit trying to buy a pair of bongos off a penguin riding a flying pig down at the beholder bar. Which is okay, I guess. Had the cover said "get ready for wacky Baron Munchausen in space adventures," it'd be easier to swallow. Also hate tinker gnomes for whom every gadget fails. How the hell did they get into space in the first place?