My one big problem with the NRM2 mod is that it removes any choice here, and enables players to build a 15-gun CL with 12 DP secondaries, 20 torpedo tubes, a floatplane catapult, depth charges, sonar, radar, advanced fire control, and a heavy AA mount. By the time an actual ship looking like that had been produced, it would have been the size of a small dreadnought, not a light cruiser. You can do similar things with 8-gun destroyers fielding 24 torpedo tubes and a depth charge thower plus 2 AA mounts + sonar/radar/FC. Because these are all cheaper than engines, armor, or guns (namely because the latter 2 slow the ship down and require more engine power), its easy to mount a crapton of these light components on ships and end up with ships that put the USN to shame when it comes to overloading a warship with firepower (and the USN made such monsters as the Brooklyn-class).
Edit: Removed unfinished sentence