Offensive Characteristic
A Pokémon is uber if, in common battle conditions, it is capable of sweeping through a significant portion of teams in the metagame with little effort.
Defensive Characteristic
A Pokémon is uber if, in common battle conditions, it is able to wall and stall out a significant portion of the metagame.
Support Characteristic
A Pokémon is uber if, in common battle conditions, it can consistently set up a situation in which it makes it substantially easier for other pokemon to sweep.
Specifically the Defensive Characteristic. Blissey is referred to as the number 1 Special Wall in the game.
The #1 special wall in the game has had to reinvent itself slightly to keep up with DPP's new special threats.
She's still the absolute best special wall in the game, hands down.
Both of these quotes are from the Smogon Strategydex's entry on Blissey. These views are accepted by the entire Smogon Community. Many Players, unless prepared, are completely walled by Blissey. My question is simply, Why is Blissey not Uber, or at least Suspect?
Blissey is able to wall one side of the attacking spectrum entirely and is used by many players in the Uber tier already due to its effectiveness, and Blissey is able to stall quite efficently using Softboiled, Protect and Wish.
Looking at the Support definition of Uber, Blissey also does a decent job of this. She can Wishpass, Inflict status, increasing the teams likelyhood of sweeping, and use Aromatherapy to clear the status problems of ones own team.
So Blissey is able to wall roughly half of the standard metagame, in my opinion qualifying for the Defensive Characteristic and at the same time is able to Stall efficently. She can also do a passable job at support.
So why isn't she Uber?
Making Blissey Uber would revolutionise Pokemon, changing the way Pokemon is played, both offensively and defensively.
I understand that Blissey would have to go through the suspect process and be voted Uber but, in my opinion, Blissey should be moved to the Uber category and banned from standard play, allowing the expansion of OU and the stablisation of the Uber tier.
The way I see it, Pokemon would benefit from the retiering of Blissey.
So, my question is, Why is Blissey in the OU tier and not Uber or at least Suspect?