We own at Bonnet Creek and love it! But like anywhere, there are pros and cons. The units are large and the property is well-maintained. They are still building on the site, so not everything is done yet, but you really don't notice. I'm really excited to see how it will turn out after everything is done. There is supposed to be another high-end hotel/resort built next to it and will include several restaurants and a spa.
The only improvements we could see so far is to increase the times that the buses run to the parks. Although it was never a problem for us, the buses are on set schedules in the morning and evening, but are really lacking with any midday runs. Once, we took a cab from Boardwalk and it was less than $10, tip included. I think that once the full scale restaurant and swim-up bar are completed BC will be fantastic.
If you decide to go to one of their presentations, be prepared for a hard sale. The first time we went to their presentation we almost walked out because the rep was extremely rude and condescending...until we bought something, then she was peaches and cream. She's not there anymore, thankfully, but I still get a bit angry when I think that she made a commission off of us. If you are interested in buying, I would strongly suggest looking at the resale market first. You won't be eligible for any of the VIP perks, but I dont think many people would even notice the difference.
Hope this helps!!