Vorastra Titan can already summon Dark Fleet ships on its position, so there is no need for it to "store" any ships inside like some sort of carrier. Its 3D model also lack some sort of launch bays for this to look graphically adequate.

I would like though, if the Titan was somehow part of the planet stripping process, which based on current info, is not planned/going to happen. I would imagine the whole mobile capital base gameplay work like this:

you send the titan with fleet into enemy gravwell, you destroy opposing forces. Then titan starts to strip enemy planet of its resources turning it into dead asteroid as suggested. The money youll get from the stripping you will use to summon the group of ships thanks to vorastras fleet beacon ability. So it wont be free (what would be the point of stripping the planets for resources, if you get your ships replaced for free anyway), but it will happen basically instantly, so if you have enough resources and available fleet supply, you can rebuild your fleet very fast.  After this, jump to next enemy world, rinse and repeat.