ImperatrixSindel
Too bad YOU... will DIE!
This, basically. For the most part they've been expanded upon with a few more years of hindsight. WoWo is an obvious exception, because they just... idek, man.I'd say the logical answer is this:
The legacy characters were characters that already had a foundation that was improved upon in the current game.
Since they were made already with a certain win condition/gameplan in mind, they were given the means to play their game further. The newer characters were designed from scratch.
I'd feel optimistically none of the newer character is necessarily bad in this game, its just they they still have room to develop their gameplan/meta.