I'll go to the point.

Can I make a new model for the CP base to be exported with MSHEx? I don't know if that's possible due to the limitations of the exporter, first it has animated hologram, I didn't see a "null" calling on the ODF, but it says something about BODY, I think that's a component of the MSH, I just want to replace the "platform" and possibly increase the size of the hologram to add some "landing zones" (yeah, another Empire at War concept), and for the same matter, is it applicable to unbuilt turrets? (to add Buildpads).

Thanks

That is all, as far as I know, possible. And I don't think the hologram is animated. It just revolves.