It could get mechs into combat fast, but I wouldn't want to keep six multi-million dollar mechs unprotected on the side of a ship. But I won't ever know the whole of your invented technologies and their universe, so maybe I'm totally wrong.
there are few problems w/ this design. for starters the mechs are WAY too exposed to anti-aircraft weapons, plus they also would create alot of extra drag which would slow it down, give it a monstrous heat signature & provide alot of extra surface area for radar to detect; than if this is an orbital dropship. consider the fact that those mechs would probably be ripped right off on atmospheric entry. aside from that it's a real neat design.
Arguable the mechs are more armoured, they would drag tho but there not going at supersonic speeds. Never thought of it entering or leaving the earths atmosphere if it did then for sure it would have them problems. Cheers for the feedback