I would be quite happy to see SAM become a viable option for tanks. The game definitely needs more flexibility with tanks. NIN and PLD as the *only* options ('cause no post-40 WAR will ever tank), and there's so many jobs that have potential that people just need to give a shot.

I'm still holding out for an update for PUPs, 'cause from the way I understand it, they can make a pretty awesome tanks if they (and their automatons) are properly equipped.

I've also had a BLU/NIN tank, but I'd be more interested in seeing if they could pull it off as BLU/WAR. I suppose it's quite dependent on the type of equipment available to BLU. I haven't really looked into it, but I imagine they get heavy enough armor. Then it's just a matter of keeping cocoon up. God knows BLU has enough hate gathering spells. With provoke on top of it, they'd be able to keep the hate nicely, while probably dishing out more damage than the other tanks are capable of.

Too bad people aren't open minded enough for this stuff.