The Uber tier exists by convention. Competitive Pokémon players have simply decided that there will be a designation for "superboss" Pokémon who will not be used in the standard metagame. This is basically for familiarity's sake, and as far as competition goes, it doesn't really matter. If you want to play a no-holds-barred-except-fundamental-clauses Pokémon game, with the "superbosses" allowed, you are welcome to do so, but for most people it's a needless paradigm shift.
However, I believe that it's worth the effort to have a self-sustaining tier list of sorts for B/W, not decided directly by largely irrelevant criteria such as plot importance or (effective) BST or whatever. I've been bouncing around an idea for this for a while, and with the Council system in effect it may be quite doable.
The main premise comes from
this thread:
X-Act said:
It is obvious that we require an OU definition that has no subjectivity whatsoever.
Extending this notion,
it is desirable that we start with an Uber definition that has as little subjectivity as possible.
1.
What would the Uber tier be like if no tiers were designated below it? I think that it would be interesting to start off with the Uber tier only for a certain time period. Something like this has been discussed in the old double battle forum before, but with the Council system any perceived "kinks" can be quickly addressed. More on that later. Anyway, I think that this would be interesting and slightly disruptive at worst.
2. After an appropriate period,
we could start with an initial usage cutoff. I'm assuming that the algorithm posted in the aforementioned X-Act thread would be used here and in all "true" usage cutoffs for UU, etc. I had this idea after realizing that the usage cutoff in the current Uber tier under this algorithm would probably be in the 20s somewhere, maybe a little more than the number of Ubers. This would be the
prototype Uber list. This is about as "objective" as I believe this can be made, without spending too much time on it. But we're not stopping with that, of course...
3. This is where the Council comes in. The Council is supposed to have people who are able to learn and think about the metagames in an intelligent way. When "proto-Uber" is generated, the Council can decide to exchange certain Pokémon between tiers immediately (e.g. put Deoxys-A into Uber and Scizor into OU... though it depends on what the metagame looks like at that point), and/or it might decide to test "proto-OU" briefly. But after that it would be the end, barring emergency situations, and the OU list would be solidified. There could be a "suspect" ladder system where different banlists are tried, but they wouldn't typically be expected to change anything.
Really, though, this method would probably (actually hopefully) produce an Uber list not very different from just banning the superbosses, but that is founded on a less subjective cutoff.