The marauder class is actually a quite huge corvette of nearly 200m length ^-^
You do need to assume a imperial star destroyer style panorama view windows on the bridge, instead of small fighter style window and it makes all sense. But you are not the only one who got this wrong, there are even some comics in which the size is off by a whole magnitude ^-^
@Aetrion Without limitations of hardpoints, you can keep modifying your ship for all eternity and only price and the sky is the limit. And furthermore, you can already rebuild a CR90 into the medical variant, all you need to do is to remove the turbolasers, add a workshop and tell the GM that the interior is either restructures for medical purposes. The is not even an addition of passenger capacity as the original CR90 distribution already mentioned that the CR90 can have hundreds of passengers, depending on configuration. Now you don't get two hardpoints back, unless your GM is nice too you which is basically the only problem with the current modification system: The system becomes crude when handling weapons and the devs decide to limit weapon replacement in form that you don't get hardpoints for removing weapons and can not replace weapons as easy. They acknowledged that problem even. So GM away that problem with allowing your players a little more freedom when replacing weapons. It's not always a good idea to allow players to get back hardpoints when removing weapons, as it is clearly not intended to replay a laser-cannon with a quad-turbolaser at no additional costs, but if you apply GM judgment you certainly can give players some lenient.