In the good old days they were pretty balanced as you needed overwhelming numbers for them to be good and a well built ratio would always outperform them. They were hard to build with their high xtal and deut ratio which kept things balanced in a world where your resources were limited to what was available from your mines and other players.
You also couldn’t overbuild fleet and needed to manage your deut for the same reasons.
Now people can just print as many as they’re wallets allow and so that previous balance no longer exists in any real sense and never will again. They can launch and fail as many times as they want without worrying about deut. It’s similar for every part of the game. Money (and previously v7) unbalanced the numbers. No amount of nerfs can fix what has been done I’m afraid.