Very wide default field of view is one reason. Other is lack of detail. When there's no reference for size, judging distances becomes really difficult. Your speed is also not that apparent and that causes a certain sort of blindness to the massiveness of the ships.
New models of Orion, Hecate, Aeolus, Levy, Deimos etc. feel a lot bigger than the original models such as Hatshepsut, Colossus, Sathanas even. And one thing the models in this TC won't be lacking is detail... so when you are close to the ship the amount of detail should fairly well. And changing the field of view is one thing, but when the cockpits are going to be put into the game, there will be an absolute and desperate need for user-adjustable, in-game controllable field of view instead of the static setting by command line.
Without that, there is not much sense in cockpits at all, because to have useful field of view for aiming and firing your weapons, you will see very little of the cockpit around you...