You actually make a good point. The bottom line for me, and many others I have spoken with, though, is that it's hard to find enough time to make a real team already, so why even potentially waste time? If there was a suspect ladder, I might have thrown something together to meet voting criteria, but there wasn't. I could have made a Skymin team for the standard ladder, just for the sake of beating into people's heads that Skymin should be uber, but I didn't feel like that would be worth my time.
I guarantee you all, however, that if this thing stays OU, we will see a significant rise in usage.
I'd rather not risk turning this into a discussion thread, but this point needs to be made.
The best way to prove something is broken is to go out and use it, not to just assume it will be banned.
I wasn't under the impression Wobbufett was broken until I had the unpleasant experience of battling ipl a few times. I wasn't too afraid of Deoxys until TAY whomped me with DSD. And I saw how well both of them worked and I went out and used them myself, until I found that they worked very well; too well.
I don't like this, "Oh I feel it'll be Uber why bother putting it in a team" mentality that's been going around. It's really counter-productive. At the very least by using the team you have the chance of convincing others that it may be Uber. And while it's too late to do anything about Shaymin-s, let this be a lesson for the next suspect.
Also, in regards to your last comment... I'm really tempted to vote OU just to test that theory out. In fact, I vote
OU, just because I feel we'll have an easier time visitng this again if it's still in our metagame, and to see if any other strategies arise to shift less people off the fence. This is a really close vote, and I'd rather it be kept in OU on a close vote than it not be.
EDIT- I also want to point out that before I typed this post I was really not sure what way I would vote. My opinion on the matter has swayed back and forth greatly over the course of testing. I'd rather wait and see how Shaymin really settles in (which will probably take longer than 2 1/2 months or however long it's been) than predispose it to Uber. It's a lot harder to unban something than it is to ban it.