First: thanks to Ace for clarifying current radar setup in short. As Jo said, this is a (one) way to learn things.
I've seen a lot of discussion about top weight here but do we have any tools to evaluate this? I mean, how high or how heavy a installation should be in order to affect ships seaworhiness considering its lenght and beam? Is this so heavy that it would need 150-200m ship?? I understand these systems need "support" like cooling and processing like Ace said but "penetration" in this context... we are talking about pipes and wires, right?
The expression "I-mast-ish" reveals (for me, at least) that there is not a current solution in hands, but some kind of future/AU-version, right? That make sense if we are referring revealed consepts of modern warships; a Meko CSL for example. How they have solved these problems in their concept?
All this is more or less "common sense"-thoughs but if you are going to shoot them down (as I quess you are), I'll require proper and spesific answers; with photos if possible.
Remember, Shipbucket is also a learning forum, isn't it?