As for trying to keep members from jumping ship, I'd suggest to find a niche for your FC in the server and recruit people with the same goals instead of just grabbing newbies. It seems great that you are recruiting fresh players and teaching them the rope but you are always bound to have people that realize they don't like the endgame and quit at 50, or ambitious players that want a coil/raid FC.

I think it's better off to make a linkshell for newbies and help them from there, then you keep an eye for players that can enjoy the game in the long term and take them in your FC. I'm sure by the ps4 launch we'll have a nice surge in new players as well.