I hope we fall in the "good DVC member" classification, but maybe not?!?!
We always try to treat CM's with kindness, courtesy and respect when on vacation at WDW-DVC (or otherwise) since that's how we want to be treated. We acknowledge good service by tipping well, over tip when service is outstanding. We tend to never take away a tip as we know that the pay isn't good, but there have been instances when the service provided was well below par...in a few of these cases, we've taken note of the person and avoided them if at all possible if we returned to the establishment. We've written thank you notes and submitted names of those providing excellent service. When we find problems with our rooms, we ask for help in solving the problems within a reasonable timeframe (broken toilet, leaky sink). We've always been treated well by WDW employees, though some CM's were so new that they really didn't know what they were doing without asking a lot of repeat questions.
We know that everything won't turn out right every visit so sometimes we live with issues that I know cause others to go off. We only joined DVC in 2000 but we've enjoyed EVERY DVC vacation we've taken though not all have been perfect. Our family motto when something goes wrong...."Who cares - life is good, we're on vacation!!"
We've definitely seen some of those "classy" or "bad/naughty" DVC members you described. The winners for me was the DVC family whose young child pooped floaters in the main BWV pool forcing EVERYONE to have to get out the pool on a beautiful warm day and leaving the lifeguards/CMs to clean up their child's mess. But no it didn't end there, they moved over to the quiet pool by the community hall and proceded to yell at the Community Hall CM's because there weren't enough chairs for their large group around the pool. WOW...now that's class!
My husband's has a problem with those rude DVC members that think that they are more important than everyone else and feel compelled to conduct business on their cells phones at the pool when others are trying to relax. He's around ringing phones all day long and it drives him insane when he has to listen to their phones and conversations. He especially liked the man that abused one of the wait staff that politely asked him to sign for the drink that they brought him while he was on his cell phone conducting business.
Our teenage daughter votes for the mom that brought a nanny with her to watch her children while they were at the pool then proceded to yell at the nanny & the lifeguards for not controlling her children while she proceded to get blitzed on pool drinks.
Sorry you felt compelled to leave the DVC resorts, but trust that we understand why you would feel this way.