Skylines the Limit version 2 is now out, which should hopefully sort out the lag issues when lots of people are playing.
Sky Dive a map by Jack the Stripper, and with help by Jerry Seinfield, is now on the server. A long challenging map that up and down and up again, leading to the final skydive for the finish. Theres a clever use of wind generators in one of the tunnels. However it could be a bit hectic at the start as it begins with a tricky loop and two 180 turns before you can get some speed up.