Put yourself in OP's shoes:
You have two reliable people in your life - Person A gives you 5$ every day, while Person B gives you 50$ every day. Your quality of life is certainly better because of the money that Person B gives you, not Person A. Both contribute to your financial well-being, but only one person gives you more room to breathe with your spending. So, in the unfortunate event that you had to choose 1 person to let go, certainly you would choose to keep Person B, no? You hate to see either of them go, but one is objectively more valuable to your existence.
Now, on the other hand, it is important to respect both, as equally as possible. Treating Person A like an after-thought is a slippery slope; Person B might eventually catch on to your behaviour, and begin to wonder if they will ever 'earn' that attitude as well (despite their contribution level). It doesn't bode well for you, the donator, if they treat ANY of their benefactors with carelessness.
I appreciate Royalcandy taking the time to listen to suggestions from any source (like he said, many on here don't donate, yet he still communicates progress, ideas, and release dates for his games), speaking as the lowest-tier donator myself. If the time comes when a 500$/month Andy demands that Royalcandy turns the story/game on its head, it is my right as a customer to withdraw support.
I've gotten my money's worth for the current state of the game, I am not paying Royalcandy for a product I've yet to play.