Finding a writing partner isn't about finding someone who makes you more hire-able. It's about finding someone who makes you a better writer.
There is no bigger sign of an amateur than someone who's worried about their stuff being stolen. If you worry your show can be stolen… you haven't written it well enough.
You don't have to travel the world to have a smorgasbord of life experiences. You can have an infinitely rich life—full of fascinating characters, conversations, interactions, adventures, relationships—without ever leaving your hometown.
If you want to get your pilot to producers, agents, or executives, the only thing you can do is move to Los Angeles. I know you can find script consultants, books, seminars, or agents who tell you otherwise, but THOSE PEOPLE ARE LYING.