CursedPh4nt0m This guide totally works for smaller ships, but I kinda HAVE to clump reaktors to power some max-sized battleship´s weapons and shields.
Everyone else doesn't. Not more than a couple where shielding around corners, maybe three for an acute corner.
BattleCruiserCommander isn't one of your tips to have multiple control rooms?
The purpose of multiple control rooms is so that you can't be shut down by concentrated fire. A square of four control rooms isn't helping at all over what one control room provides, and you're going overboard even if they were singles. Unless your ship is designed to break into independent ships you probably don't need more than three control rooms and two is usually enough.