i am sorry to throw a stick in this wheel - I do support he idea overall - but indeed many Ukrainians might take if not offense but a stand against being called "other Russia" :-)
Same goes for Baltics - except 100 times stronger.
Georgians may actually get offended.
Even the most loyal - Belorussians dont like when their national identify is mixed.
how about "Airlines of post-USSR space" or ex-USSR?