Straight up I'm sorry if EULA restricts this, I don't know very much about it.
Since a lot of the perks were taken away, mainly flying, and I know that it can not be brought back currently, I suggest an alternative. Double jump. Where a certain rank can jump twice to reach places normally not accessible to normal jumping. My house was built knowing I had the ability to fly, so I can no longer navigate my house. This might bring back some players that left after perks were removed.
Thanks you.