Welcome to Librarium Online!
Am I right in thinking that if I purchase an Apocalypse class battleship from GW (because I think it looks better than their Emperor/Retribution model), I can use spare plastic launch bay modules to turn it into a different-looking Emperor class? Or even more plastic weapons battery modules to make it a Retribution?
Thought I'd better check the plastic-metal compatibility before I make any purchases! Cheers.
All the old Specialist Games resources are currently being uploaded at the Tactical Command forums, and you can find them here: http://www.sg.tacticalwargames.net/fanatic/.
Absolutely - I've got a friend who did exactly that and I've mixed and matched myself when I made my Mechanicus Ark. Obviously you'll need to use super glue, and you might find it useful to pin your bigger ships. But other than that, they're completely interchangeable and, in my opinion, look great! You should get some pictures up when you're done!