All of it still comes down to supply and demand. If CMs were hard to find, offer more, especially in wages. For most people, the perks are a nice add-on, which probably gives an uptick in morale, but they aren't the deciding factor for most people who work there. But if that's what it took to man the parks with happy CMs, offer more. Most who have posted on this thread would seem to agree. It's easy to say as a CM, "I deserve better" to which your employer would probably say, "Fine, if you feel that way, then quit, and see how green the grass is somewhere else."
Most people think they deserve better than they get, whatever group you're in. Find a college student who thinks tuition should be higher. Find a doctor who thinks his rates should be lower. Find a criminal who thinks sentences should be tougher. Burger flippers think minimum wage should be higher. But there's always another side: Tuition reflects the reality of educational value with long lists of hopeful freshmen who won't get in, the public and health insurance companies won't pay higher rates to doctors, the public wants tough criminal sentences, and employers and customers won't pay more for burgers or their respective flippers.
Many public employers are now getting a reality check with their pay and benefits, which have begun to outpace the private sector. They cry, "We deserve more" but the voters, for the most part, right now, vehemently disagree. Thus big time cuts.
On another note, I am a stockholder, and we don't get any perks of substance. There was a time when stockholders got big discounts, but the SEC and IRS probably considered that a taxable dividend. By by stockholder discounts. If I don't like it, duh, I'll sell my stock. Similarly, if you think the discounts should be higher, feel free to bring it up to the proper channels, but you probably should be willing to quit if it's that important to you. From Disney's viewpoint, they see full parks and hotels, merch flying off the shelves, and plenty of good applicants for the CM positions. Why give more?
Sorry if this comes off as harsh, but economic reality is rarely caring and subtle.