I think we can all agree, there is no system in place currently to establish any type of standardized bid process. So that part of the discussion is irrelevant. In an ideal situation, in the not too distant future, a standard scoresheet will be used. In this ideal situation, I feel "Worlds Caliber" teams will need to be scored over a certain threshold to receive a bid. I'll even go a step further and say a raw score would be the qualifier. And THAT number will define what a Worlds team is. With the exception of the International divisions, this would also be a high score.
I do not agree with the idea of teams going because they work hard, it's a great experience, or whatever other rainbows and unicorns statements that you can make. Two reasons.
First, scheduling, simple as that. Worlds keeps growing. The International Coed division for example this past year, those teams were required to be up at the crack of dawn, AND expected to perform again at the close of the day. I would imagine Small Sr was the same, but the 2nd largest division was Small Limited Coed, and those teams were having to perform well past 10pm.
Second, as several have mentioned, Worlds is supposed to be the best of the best. If it sounds elitest to say that not everybody should be there, it is. I think the mistake ppl are making is elite automatically means big gyms, which isn't true.