I agree that there are too many bids, but in the US. Up in Canada, some area have plenty of bids and others have not enough. We're doing ok in the East (Ontario/Quebec) - good teams are going and there is competition. I know in the west, there are very few bids and a lot of good teams up and coming. They're going to be super short bids in the next year or two if they don't get more.
In terms of teams placing last, I know the first time I went to Worlds, I was just amazed I got to go. 3-4 years later, I want to make finals every year. The experience isn't there for me anymore. I want to do better. I want Nations Cup and a chance at placing. But that's having gone so many times now.
We've also seen many teams in our club who are amazing at home, go to bigger/American competitions and get destroyed. It's actually great for our kids as they come back wanting to learn more and do more. They realize what they need to do to get better and get to that level and it can be a high motivator for them. There is a team from my area going to Worlds for the first time. They are going to get creamed. And they are so excited to just be there and experience it, and I am so excited to them to go. They are going to learn a lot and be a better team next year because of it. For a lot of teams, the experience is what is going to motivate them to get to the next level