1. Not all will and you're fooling yourself if you think that.
2. In FFXIV, all mages wear caster gear and its shared. It's a mage, not a tank. Never was a tank, and probably/hopefully never will be a tank.
3. Sources? FFV and FFXI they used swords.
4. Without a good HP pool the BLU will not survive even with damage resistance/reduction. They might not get a auto-regen.
5. Something we agree on, cept "your" #4
6. Also YOUR pure opinion dude.
Ninja Edit: For #2 People said the same for SAM. Remember the SAM will be a tank debate? The reality: It's a MELEE DPS.
Ninja Edit 2: Yes, Quistis used Whips in FF8 but that kind of weapon patheic and never did any good damage unless you Junction'd good stats on her whips. And even then, they were a poor choice. Her whips were pure fan service and nothing more. Your point is a bit moot. Quina using Forks also bad cause the damage was RANDOM. Very poor choice in weaponary. If they are gonna make characters BLU's give them weapons they were originally designed to use, swords/staves.
Also, Kimhari was a variable in FFX. You could make him into pure blue caster dps or melee blu caster dps. He NEVER made for a good tank. Strago in FFVI was a pure blue mage in FFVI. While he didn't use swords, he used what a mage character would typical use for combat, a stave. But he never made for a good tank either.
You can't use FF8, FF9 or FFX as sources. Only FFV and FFXI gave us what square designed the class to be.
In short, not narrow mindedness, just common fact and history. Mages don't make good tanks in this game. This isn't FFXI where there are a lot of variables added in.
We done here? Good. /blist GG