Hi,
Not sure of the exact internal layout, but that area would probably have; aviation workshops and stores, air conditioning intake spaces (I think I can see intakes in some pictures). The Crotale reloader is in the superstructure, but I don't know where the magazine is. The mag. would either be in the superstructure beneath the launcher, or in the hull beneath it. Either way, you could do a swap . I suspect, however, that the gun has a carousel or other autoloader beneath it, so you probably can't remove the little bit of superstructure that the Crotale launcher is sat on, as you have done in that image, without loosing space somewhere.
- RP1