Before Name Change, Fix FC Bank Thieves First!

[Marisela]

That's why you have all the setting at your hand to allow which rank can access each slot tier or none at all.

Simple solutions is just don't rank them up unless they are active and been join for a long period of times. You can also do something like this...

1 weeks - Access to Tier 1
2 weeks - Access to Tier 2
3 Weeks - Access to Tier 3
One Month - Two Month - Access to Tier 4

Don't put anything valuable in Slot 1 - 3. Only Valuable at Slot 4. And don't let them access gil and crystals of course. This ways they can't jump from one FC to another to do the same to other FC.

Then if you know them really well, can let them take Crystal or Gils. But only recommend if you know that person really well or real friends. SE don't really need to fixed anything. As a players you have all the necessary tools to do this already. SE not there to babysit. People who get in invite and let them access all Chest is beyond me, and you are just asking for it. It like you're asking them to take advantage of you.