So... WAR will be much better at tanking than PLD will in 2.1? I somehow fail to see this happening, rather, what I believe is WAR and PLD will be just as good as each other so both jobs won't be neglected to be brought into content or runs or anything.

Won't really know until the patch is out, but I doubt they'd make it so unbalanced that WAR makes PLD obsolete or something.

But, it's fine if you want to switch jobs. I've tried most of the classes in the game and they're all fun to me. I agree with Zezlar, play whichever job you enjoy most, there will always be a role for all the jobs.