So, before I start, no, not an expansion in the sense of The Shivering Isles, I just ran out of title space so had to cut it short.

Anyway, when I was 16 Oblivion was my first introduction to the series and after exploring all the known lost cultures/lore available in the series to us, I have always found Ayleids the most fascinating. Does anyone else hope we can get more in depth lore on their race and cultures or am I alone in this?

i agree

As much as I liked the thought of the Ayleids, the Maormer have always seemed more interesting to me. They still exist and their physical description to me is the most intriguing "chameleon-like skin". Do they actually change color? That would be cool.

Plus they are sea-faring, so any expansion would most likely include ships travel (not ship travel like Dragonborn).

Actually, we're just unsure if they are still alive since the Ayleids have gone into retreat into the forests. I don't think there is a small city of them (though it'd be cool), but like those two Falmer we see still living in Dawnguard.