My shipyard is getting out of hand! If I haven't researched all of the right techs to get some of my previous designs, I'll build new ones. And then, when the techs are researched, my previous designs pop up without my notice. The list is getting very long!
I suggest an expandable tree list structure for the shipyard, with ships perhaps grouped by hull size and function or by some other user-defined parameter. That way, if I want a large ship, I only have to look through the large ships.
If not a tree list, then at least some more filters besides "Core" and "User".
-Ryan