For me it's important to have social interaction. It doesn't need to be every second or anything, but if I say hello or good morning in DC chat and people are online I expect someone to say hello back.

Building on the chat and getting to know people so that I look forward to logging in and helping people out.

Also to me an fc should feel like a team. We're all playing the same game so let's work together and have fun, ya know?

As an example when I first joined my current FC, it was during a more quiet phase of stormblood. There weren't a ton of people online, but my fc leader took the time to notice when I would be crafting and throw up a buff. He noticed when I was pugging the crap out of tsukuyomi and gave me a custom rank for a bit.

It's the little things to welcome new members and it shows. We've grown since then and try to pass this along to new members and get to know them and make them feel like a part of the team.

To me nothing is more alienating than joining a group and be met with silence.