That's not related. A number of the HTL fighters, but not all, had the retail cones removed. The Erinyes, Pegasus, and Perseus I know don't have them, the Ares, new Herc II, and a couple of others don't. It's inconsistant but not an issue with the code.
Also, the Herc II is in mv_models. The reason it doesn't show up in-game is that there is also a Herc II with glowpoints in mv_effects that takes precedence.