You misunderstood the post.
Thief/Maruader isnt denoting a Main/Sub combo, in this case it is denoting a Job/Class combo.
It has already been said in the blueprint that Having a Job set will prevent you from using certain class skills, so even if you were to equip a wand as a warrior, it doesn't mean you will be able to use the elemental magic or healing spells, making it silly to equip a wand should they allow it anyways.
Buuuut that doesn't mean it would be silly for a Warrior to be able to equip a Sword, Axe, Spear, H-H weapon, or Bow. Pretty much any DoW weapon. Warriors have been known to be weapon specialists, and can use a variety of weapons in combat.
Because Archer is a "Bow User" and Ranger is a "Ranged Damage Dealing Specialist." One is a Weapon, The other is a Specialization.
Lancer uses a Lance. Dragoon uses Jump and other abilities to help control Hate.
One is a weapon, one is a specialization.
Thats already established with how they are going to implement them.
That isn't what we are arguing.
What we are arguing is there is no reason to lock a Weapon from a Job just because that weapon might not be the best fit for the job. Because the Job doesn't define the weapon used, it defines the role performed in combat which again doesn't define the weapon used.
I dislike the "one class per weapon type" system that we currently have. Doesn't it go against the freedom of versatility and uniqueness that FFXIV was trying to promote from the beginning? I really want to get on with the "drastic changes." ^^