Aaaaannnnnnnndddd i'm in.
I had already tried the demo and used an invite from this forum to try this game, bfore deciding that 15/month was sadly too expensive for me.
The character slot/costume slot limitation is a little harsh, but if a one time only payment of about 20$ unlocks it for good, i might consider it.
On the "Archetype" debate: from what i understand, it's directly taken from DCUO's "inspired by" fonction. Don't see anything wrong with it.
If i understood correctly it's optional anyway, no?
Careful character building is not for everyone, if you can choose "i want to be a flying guy who throws fire" in the begining and be done with it, casual player might come more easily.
As long as character's looks customisation is as good as it is right know, even the powers are not that big a deal.
Anyway, definitely waiting for the official launch, i'll be carefully planning my characters for the next few month ^^ (and i'll consider buying an extra costume slot to make "freedom reborn team" costume)