Hi,
So, Gith kind of struggle as a race. They suffer from the Bless Weapon weakness and just in general aren't quite good enough to offset that sort of gaping vulnerability. Most have already accepted that Gith are just an aesthetic choice.
However, Gith are known for their mastery of the planes. This allows them to shift between the Prime Material and the Planes with relative ease. Them not having this seems like a missed opportunity, given how bad the races actually are mechanically.
I suggest giving Gith the ability to use the GSF Transmutation teleport regardless of having GSF transmutation. Or, an ability on cooldown that behaves like an Attunement potion that takes them to the Astrolabe from anywhere, regardless of where they are.
You could also consider letting them access the different planes without their corresponding keys, but that is how the game knows where you want to go, so maybe not.
This would add a little bit of flavor to a race that's sort of wanting a little more.