Thats right, if you have a group of friends who can make an active organization you can have your own Corellian Corvette. Fancy, I know.
And yes, combat on SW:AoA requires you to have a coded weapon unless you're fighting with your fists and feats.
As for something like what Lobot was wearing, it can be requested to be made into a object, or possibly even a Feat for your +sheet. Fact is, in 17 years, nobody has ever asked for anything like Lobot's headgear.
In the long line of Star Wars' lore, there's never been a ton of 'General Grievouses' out there either, he was a pretty special snowflake... and totally should stay that way too. But thats not to say that a really good role player couldn't take on a concept like that... again, if they asked.
Coded droids use their own Feats to have language access. Thats part of a coded Protocol Droid for instance.
A PC'd protocol droid / translator droid is awarded all coded languages to their +sheet, which functions identically to a coded object droid.
Any other questions or concerns, leave them here!
Thanks!