Uh, I really doubt there will be a ban tier between UU and NU.
If we are basing NU on usage in UU (like I suspect and hope we will), we must have a tier between NU and UU. Usage rarely creates balanced tiers. Just like we need a tier between OU and UU (BL) because UU is based only on usage in OU, we need a ban tier between NU and UU (as yet unnamed) because NU is based solely on usage in UU.
Usage statistics in OU are irrelevant for determining the "UU" Pokemon of UU to find what is potentially in NU. I am aware we don't have the UU usage statistics yet, but that just means we cannot come to a real decision yet, which is why I was dubious about the usefulness of this thread in the UU / BL discussion thread.
UU works like this:
Consider all the non-uber Pokemon. Pokemon that are used too much are banned from UU automatically (this is the only real purpose of OU). We then have a list of potentially legal Pokemon. However, some of these Pokemon create imbalance because there is not yet a check on power. These Pokemon are also banned from UU (this is the only real purpose of BL).
I don't see why we wouldn't just create NU by extension.
Consider all Pokemon currently UU. Pokemon that are used too much are banned from NU automatically (this is the only purpose of UU, as far as NU is concerned). However, some of these Pokemon can create imbalance because there has not yet been a check on power. These Pokemon are also banned from NU (this is why we need to create a new tier).
The only useful things I can see coming out of this thread would be deciding just how little use it has to receive in UU to be up for consideration in NU.
But please, please don't try and decide what ought to be banned in NU before even know what is really up for consideration, unless you want the UU / BL mess part 2.