So far in my adventures in Eorzea I haven't encountered any one I wish to kick. Sure I've had a few moody gits but it's kinda excepted and if the person said he was going to BRB I don't mind waiting but only for a few mins.

Now the kick feature I can see the good and bad of it. The bad would be if say you and another player fall out over what ever then he kicks you even though you done nothing wrong and was doing your job. If anything I think I would leave and find another group. I mean to kick someone would require a just reason to do so, like AFK for 20 mins or simply not doing their job right and it's your 26 retry.