One of the time when I had a brainfart is when I learnt that Ancient Egyptians had archaeologists themselves to study Even More Ancient Egypt. Like, we have a tendency to think of it as a continuity, and yet, it was so long that we forget about it.
As for Elizabeth... Yeah, naval gameplay is lackluster. I don't see what we could add that other civs or leaders already do.
Perhaps making all her units act as Privateers, as in they're invisible until in range of another unit or special districts?
However, I kind of liked the "+1 CS to naval units for each Great Work of Writing in the Capital". Or perhaps "+25% combat experience per Great Work of Writing in the city for all naval units trained in this city".
All of that wouldn't really work well with Workshops of the World, but could work with British Museum (as in you'll have more chance to have Theater Squares with Amphitheaters containing Great Work of Writing). It would work with the Sea Dog and the RNDY, though, so it's that at least.