I'll certainly check your comic, it looks interesting!
As for your question.. I hide a lot of small details and references, and it's always nice when people notice some; but there are none that I specifically, more than others, want people to discover.
I had a few times the (welcomed) surprise of readers finding references that were exact, but that I did not realize myself (these cases can be disheartening when readers make you realize you are heavily referencing without noticing, but when it's small random things, it's not an issue, and it makes me feel closer to my readers, in a wholesome way).