This thread is hilarious.
Two thoughts. A company offering a product should attempt to please a consumer, more than a consumer should attempt to please the company. What I mean is that these bullshit loyalty claims throughout the industry of "supporting the park," with disregard to product satisfaction is really twisted. Giving to a corporation is not giving to a charity.
For example, on a Silver Dollar City Facebook group I watched some lady get destroyed by fanboys because she simply said she wasn't going to renew her passes if the train wasn't operational by next season. She said her family enjoys the train the most. She was shamed for not supporting the park.
My second thought, on behalf of parks, is that they also don't owe you anything. Parks are simply offering their product as is and leaving it up to the consumer to make their purchasing decision. They should, and only will please you, if it benefits their profits margin.
Companies will change their product depending on current market target trends and profit. A company's goal is return on investment, which usually comes from customer satisfaction resulting in purchasing the product. The bottom line is about your money, not your feelings, despite them being typically related. However, the relationship is much less personable than people want it to be.
If you're not satisfied with the product being offered, don't renew your passes. Corporate doesn't take this personal. You have a right to be pissed if you want, but there's really no reason to expect anything other than profit driven decisions.
Six Flags Saint Louis is currently pleasing enough guests to justify their decisions to not add new attractions. If they're not pleasing you, there's no need to have blind loyalty. Wait for them to offer a product you want to pay for. Don't pay first and expect your desired product as a result of some false loyalty. That's counterintuitive.
As for us, I'd love to not renew our passes this year, but Eve crossed the 36" threshold. There may not be anything new for me, but there's plenty new for her. We'll see.