I think that the main reason people disagree and complain allot, is because "the content doesn't match the label on the bottle.", It's all about broken dreams and expectations.
The official web pages give an impression of a product that's super good, and pretty complete. ...just some bug testing now and then.
The real experience of PlaneShift is more like this:
Yo enter th airport, and you have this cute and nice flight stewardess who hands out an glossy paper brochure, about being a part of a test group, testing out a new airplane.
.. "Wow, testing a new airplane, before it gets into commercial flight. Thats cool, ...writing history. ..in 30 years I'm going to tell my grandkids about this".
You have to wait 8 hours on the airport for your next plane, and this test flight is going to be finished within a couple of hours, so this is perfect.
You have to sign the brochure, (EULA):
The brochure is basically saying things like: "You hereby verify that you have read and understand all instructions .. bla, bla, bla .. an if you get hurt or killed, you take full responsibility for your own actions, and, and .... bla, bla, bla.. ...Get a free meal ... bla, bla, bla ...Get a diploma... bla, bla, bla.."
You think this is good, nobody can afford to damage the airplane anyways, This is good! and you sign, and follow the rest of the group.

.. The plane is beautiful both inside and outside.
Strategically placed all over inside the plane is several crash dummy's. As the plan take off, you start asking questions about the crash dummies, and a person ask you: "Didn't you read the brochure? ..we are going to fly for 2 hours to a desert area, and there we are going to jump, and the plane is going to crash into a huge concrete wall!" ..... but ... O.o