I went up with the lads to Major to farm at people's suggestion. It's figured that because Major is riskier, there's greater reward. Ishtar's seem to spawn far more often than Battleships - and as such is much more difficult- yet drop nothing at all. Surely, like the relationship between Nomad Cruisers and Gunboat remains, Nomad Dreadnoughts should drop at least something like 2 or 3 battleship remains given the extra difficulty? Right now going to Major/Psi really is pointless, because it's a lot harder with a lot less reward. Surely this must be an oversight?