Sigh. I realize you're a teenager so you literally don't know what you're missing (not your fault, you weren't even alive when the decline started). But it's depressing to me that there's a whole generation of people who don't know what Disney was like prior to the marketing shift.
I don't know that I would say that WDW has declined. I think many of us, myself included, seem to remember some things better than they may have been. Now, has better attention to the parks been paid in the past? I would say absolutely. But, as far as the value resorts and moderates being themed, I see no problem there. What happened when the major marketing shift occurred back in 1987 was that Wells and Eisner made on property stays affordable for a large number of guests that prior to this push would have been forced to stay off property. WIthout this revenue, you would not have all of the options you have today.
I have no problem with the value resorts, or moderate resorts, having Disney themeing. You have to look at a few things when thinking of this. First, Walt's idea for Disneyland was born from a number of letters of children requesting the ability to visit with Mickey, Snow White, etc. So, characters have always been a major part of what Disneyland and, later, WDW is.
Now, the major thing, I believe, people don't consider when it comes to the Moderates is the rate at which prices, not just at WDW but all over the U.S., progressed between the 1990's and today. Because of the ramping up of prices, there became a gray area between what would normally be the target demographic that Disney pursued for value and moderate resorts. If you stay at Moderates often, you will notice there are mostly families with young kids. Since these families are a nice chunk of what WDW attracts, you have to have features at these resorts that specifically targets children, as well as adults. I find the Nemo theming at CBR rather understated. It is, in no way, close to the over the top theming of the values.
What I think you see in each of the levels of Disney resort is a fading of Disney theming. You have the values which specifically targets families with young children with the over the top Disney character theming. Then, you have the moderates where there is a mix of young families and older people and families with older children who do not necessarily look for Disney theming. Then, you have the Deluxe resorts which have theming but more sophisticated and not so Disney centered that appeals to the older demographic who prefer to stay in a unique themed environment devoid of childish tones. So, ultimately, it appears Disney has set up the resorts to appeal to the many different facets of family life. Young, between, and older. And when I say older, I do not mean "old" , I mean with a more mature interest base.
Just because WOL is a teen or younger does not discount their opinion. We, as older folks, should be careful not to discount their views of things Disney because we think "we" lived through the golden years of WDW. Fact is, most of us are older, more cynical, and tend to view the Disney refillable mug as half empty. Just read the thousands of threads of what's "wrong" with WDW now.
Fact is, I think the young folks are closer to the truth. Because they are looking at WDW through the same eyes we did years ago. They aren't looking for what's wrong. They are looking at the fun they have, the memories they have made, and the way they feel when they are at WDW. Should we hold WDW to high standards? Absolutely, especially given the hefty investment we all make when visiting. However, I think we could learn a thing or two about these parks from younger folks too.