Team Vipers did some playtesting and here is some feedback.
Pros: Great idea for a TF2 map, especially since the space program was really getting going around the TF2 era of the late 1960s.
Cons: You need more directional arrows. It took us a while to realize the first cp was underground. The biggest complaint was that there are not enough ways to get to the cap points. For the second cap point you have one flight of stairs and two lifts, and then for the third cap point you only have the flight of stairs.
Improvements: #1 More pathways. Perhaps add some towers atop the red and blue base with platforms that go out to the second and third cp. #2 Need to buildcubemaps in console while running map so your reflective surfaces work #3 Better directional arrows
Rating: C+ because you have a great theme but really need to improve layout or its not going to be a very fun map.