1.

Busy status just means they don't want to be bothered with tells. ofc you can't get tells in a instance but i suspect it carry over from non instanced, otherwise it's little suspicious.

2.

Don't see it being suspicious that they use a chocobo mount, everyone have their preference

3.

Exact same gear as most crafters and gatherers?

I agree some of it sounds little suspicious but I would be careful to make reports without having proof, I'd rather not waste the GM's or whatever team investigates these things without more concrete proof.

Just my 2 cents