I'm very fond of pre-dreadnoughts myself, and a few come immediately to mind that I would love to see in 1/350 scale styrene:
Russian 'Peresviet' battleship
Russian 'Gromoboi' Armored cruiser
Russian 'Askold' Light cruiser
Japanese Tokiwa Armored cruiser
Japanese 'Hatsuse' battleship
HMS Canopus battleship
HMS Good Hope Armored cruiser
USS Brooklyn ACR 3 (my favorite predreadnought!)
USS Charleston C 22
USS Pennsylvania ACR 4
USS Tennessee ACR 10
German SMS Yorck Armored cruiser
German SMS Blucher Armored cruiser