[mejutoco]

IMHO, it is mainly The default styling of links (blue with underline)

[galaxyLogic]

I think you're right that's the main non-modern thing, you don't see such much these days. I always did "hate" the default blue of links.

Why does it bother me (and I guess others)? It is because it looks like the links were done fast and cheap, with no style, except the default style.