This was the right move to do right now. I agree that there are risks, but you cant discount the possibility that we would wake up one day and those trails would be closed for whatever reason. This avoids that.
Its a good test case as well - who knows where this can lead and at least its not full steam ahead with all the trails before we see how it plays out.
I can speak to a number of your questions.
Does "improved safety" mean dumbing down those trails? Response: this is a risk but there are a number of safeguards in place. DWV very much wanted NSMBA involved in this and NSMBA was firm in that it would not get involved without support of the local builders. Locals are excited about the prospects for this project but were ONLY willing to support it if the character of the trails remained the same (not dumbed down) and we also included the strict criteria that the current builders must be offered paid work for these trails (no stripping of trails to give to different builders). Without those two, there would be no local support and NSMBA would therefore not be involved and DWV would be out of luck with it all. As would BPP, who is attracted to this project because it shifts potential (although likely nil) liability to DWV for these trails. There might be adjustments, but these trails were agreed to stay as rowdy DH trails and not turn into Espresso on Cypress. That said, I imagine that there will be some saying that they should become more usable for a greater number of people, that is however not what was agreed to.
You need to start somewhere - lets see if people stay true to what they agreed to - we need to give everyone the benefit of the doubt if we want to make progress.
Personally, Im stoked on the idea of a climb trail there. I hate the road and with a new climber in there I might actually venture to Cypress East now and then. Land ownership is a bit of a checkerboard in the area of where the climb trail is headed, so it might get complicated. The days of only DH bikes on those trails are gone - so those with pedalable big bikes might love this new option!