They didn't know how they could get two different MS to deploy from different catapults at the same time, and still differentiate the engine bits.
Thus we have the retarded shield-sphinx.
Don't think too hard about it; it's at least better than a Gunperry. Or Medea.
White Base always looked weird to me.
Albion, though...There's a Mobile Ship I'd like be catapulted from if you know what I mean.