We had a Zone Pass, and I'm betting you do.
All they are doing is trying to get you into a sales meeting.
We did find Thousand Trails campgrounds good for us. They are not high-end resorts. Some are on par with a state park or a COE park. Some are simply RV parking lots. (One advantage over COE parks in Texas is that most COE parks lock the gate at 10 pm, while TT does have access to campers who choose to go to dinner and a movie.)
We did purchase an upgraded full memberhip - Platinum Elite - a resale of an older membership contract through a broker. It works for us.
The key thing to understand about TT is that there are literally hundreds of versions of the advanced contracts.
They cannot make massive changes to the basic number of days access, daily access fees (if any), etc. They have thousands of these contracts out which list specific terms and the company cannot change them unilaterally.
The reason for scheduling at 'their convenience' is that a particular sales person wants the commission if you decide to purchase an upgraded plan. If Sally from campground A got you on the phone, she doesn't want you to meet with Charlie at campground B.
I just walked into the sales office at the campground where we were staying, and asked the person behind the desk about the details of the 'new program'. He asked for my membership card, and then told me about the very few options which might be available to me none of which made any economic sense.
Most were related to buying stays at 'Getaway Club' cabins for several thousand dollars up front to be used over the next 10 years.
Yes, TT is putting some money into their parks. Construction is slow. The Las Vegas Clubhouse/ Activity Center was damaged by a storm in May - and as of Dec 19 when we left was still not open. I can't find anything on-line to say it has reopened yet.
Bay Landing in Texas has finally been able to patch the pool so that it no longer leaks. It might be open this summer after being closed over a year.
One thing I can see is an issue for TT is that some CGs simply don't have the infrastructure available to upgrade power to 50amp. The power lines simply aren't there to add that much usage. Bay Landing and Lake Tawakoni in Texas cannot add sewer sites because they would have to pump the sewage 12 miles in one case, 22 miles in the other to a suitable treatment facility. Both are located on the shore of water supply lakes so on-site septic treatment is not allowed. (East Fork COE park on Lake Lavon near Dallas has the same issue - they actually put in the sewer system to the sites several years ago - but the water supply district stopped them from building a septic system, and the Corps won't/can't pay for city sewage treatment.)
Each campground has its own unique set of local circumstances.
I do wish that when you check into a campground - they would all have the Annual/ Permanent sites clearly marked like Pio Pico does near San Diego.
Lake Conroe is the worst in my experience. They appear to simply not care anything about TT members who are not signing Annual or Seasonal contracts with their CG for extra fees.