I commissioned one of the Alien bridge officers and with some tinkering at the tailor, she now physically looks like an Orion - she's one of my tactical officers. I hadn't noticed the actual Orions could even show up despite not being able to use them.
Ok, they may not be a real Orion, but they look the part.
One of my Federation captains is an "alien" Orion female. Stop looking at me like that!!!