Yea, the "conversion costs" are...um...off in many cases, which does sort of muddy the issue.
However, how many ships can you "get away with" for how long before you start running into those game-crashing garbage collection issues? Could the carrier logic be pushed to "only consolidate if > 2000" ships, and waiting longer than three seconds before consolidating already "loose" stuff.
I think the combination of the, in some cases, unbalanced conversion costs combined with how aggressively it does this logic sometimes leads to a lot of the fustration. The conversion costs I know can probably be dealt with little risk to the game, but making the logic less "aggressive" may reintroduce those situations that were tripping those crash bugs in the runtime environment. That's why I asked.