What do you mean? I explained it on a specific example.
-Say you want a Cruiser umbrella family for all kinds of cruisers and Battlecruiser in it. (which for my mod I really need)
-But also you want the Cruisers to remain under the Capital Ships, because it
a) makes sense
b) under the High or Huge unitcaps get less restrictive and you want to keep the original structure to keep it less restrictive by having Cruisers under Capital ships.
c) you don’t want to do either Frigates - Capships (Carrier, DD, SY) - Cruisers, …or Frigates - Cruisers - Capships (Carrier, DD, SY), because then you have either Crusiers at the very end after Shipyards or Cruiser before Destroyers…
Under the current system the two are mutually exclusive.
everything that makes the game better is a welcome prospect. And if not devs your turn. 
