I would like some kind of content-warning type situation, but where I can define what kind of content I want to restrict. And then, somehow, instances have tags associated which then apply to all of their users so that I can have a warning that users of a given instance have a reputation for sharing content that I would like a warning about first.
I would still want the content to be posted, but I would prefer that it requires me to actively unhide the content and default to always seeing it.
The G1 had a great keyboard with its staggered keys, truly a great experience. But the manufacturers all seemed to transition to a grid style (rows and columns all aligned) and with it a poorer experience.