I'm not sure if weathering would add a lot to my EotBS fleet (green) because it has pretty high levels of shading and highlighting already.
I think some models would be a better fit for a more weathered look, maybe the Prussian fleet. I've got that fleet primed but haven't even finalized my color scheme for it yet. The tesla weapons they use I think would be a very good target for weathering and the effects that would have on the surroundings on the rest of the ship.

Also have a few terrain pieces, oil rig and fort complex, that would be very good places for a very hard used look. I'm planning on doing those as soon as the Australians are done.

I know a lot of people are using the straight pigments for weathering now and I haven't tried them yet but I've been thinking about picking up a couple and experimenting with them.