Seems you don't get it, it's already open to all - Zoners are civilians and ship nohow limited in usage, as Zoner ID allows you o fly almost anywhere you want. And no one may abuse ship anymore with pirate business and go on. I really can't find a reason why need to fix what is working perfectly inRP and OOC.
At last, keep Corvo as it is now, make something lighter for civilians if you want it so badly.