As far as I can tell, Going to Orbit is a pointless load screen for eye candy's sake. Why not instead of Go To Orbit, you hold the button to bring up the exact same menu? Skip a load screen (of which there are a large number of, half of which being Going To Orbit) in the process?
Edit: To those saying it's a lobby and for fireteams, I'm not saying get rid of the functionality of Go To Orbit, I'm just saying lose the load screen and backdrop, and just have it a menu you can access straight away by using the same Press and Hold that we use now. No one's instanced 'physically' that you invite while you're in Orbit now, so there's no worry about what inviting people to your Fireteam and Party might be like. It would change nothing
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When the guardians gain the ability to teleport from planet to planet instantly like the Vex is the day the "Go to Orbit" functionality will vanish.