Actually, everything that's good about the trail system is the result of the work of the park people and the volunteers. As I've pointed out many times, 90% of the trails are actually pretty solid and the park is pretty much free of trash and dumped junk. Before your time maybe, but the entire Rocky Point sections was built by volunteers, and a number of badly eroded trails were successfully closed down (Three Hills, Powerline, etc.). More recently, the volunteers fixed the mudhole by the bridge on Rocky Point and the Park removed all of the fallen trees across the trails. You may not be happy with the speed at which things get done, but it's kind of insulting to the people who do show up for TM.
From the Park System's viewpoint, we mountain bikers are not exactly model citizens. Mountain bikers are the ones building rogue trails and removing signs, fences and other trail blockages when the park tries to close down the rogue trails and some of us are not super mindful in our interactions with other trail users. We also haven't been showing up for TM sessions (or TM training, even when they scheduled an extra session at our request). Given those facts, we're not negotiating from a position of strength and we have no standing to make any demands. At this point, I think we should be humble, show up and try to rebuild our image (and hopefully the trails).