I hope you don't mind my jumping in ( probably a little late ), but I just bought OW, and finished reading through it for the first time, and have a couple of observations-

I find the character generation as found in RT to give a more original feel ( and about the same with DH ) - take Void Born:

-5 STR +5 WILL, -5 Fellowship to non Void Born, Ship Language, Pilot ( Void Ships ) and Nav ( Stellar ).

If I am reading the OW conversion correctly, you take:

+3 to any two of the three characteristics, + Lang ( low gothic ) + common lore ( Imp ) + Operate ( void ships ) or Nav ( stellar ) + peer ( void born ) + disturbing voice

The OW conversion really doesn't do much to shift a characters starting stats to show an obvious place of origin, a simple + 3 to any two of three listed stats can easily be lost in dice rolls, while a -5 and + 5 are not so easily lost.   Giving a peer talent, doesn't play the same or roll the same as having an automatic -5 to dealings to all other groups.  According to DH and RT, Void Born know comparatively little of the Imperium outside of their ship, so why would they have Common Lore ( Imp )?    Finally, what is the use of having Pilot ( void ships ) and not being able to navigate that void ship?

I would probably maintain the majority of the RT/DH origin, something like -5 STR +5 WILL, -5 Fellowship to non Void Born, Ship Language, Pilot ( Void Ships ) and Nav ( Stellar ) ] and add the aptitude Agility or Fieldcraft ( Void ) to include void ships and void stations ( both of them would fit the requirements for surviving the Void ), to balance the -5 Fellowship and loss of Charmed.   This also alows for the more complex character generation as found in RT, to be used.