The limit of 3 classes of desynthesis lvl max

[Yonko]

I have hard time to understand why this, I have some ideas like :

It make some economy, some trading.

But yes, in this game, one of the first thing I saw, the first time I played :

I can do everything with 1 character.
And yes, better the desynthesis, you could.
You can lvl all fighting/healing classes
You can lvl all crafting classes
You can also lvl all gathering classes
Some of them even share some piece of gear.
If you're hard-core, you can even get max gear on all of them (ok, not becoz of the limit of coil, et the limit of Poetics, but still, everyone -hat is playing since month- have at least 2 classes very well geared, some players even more)

But for Desynthesis, you can get only 3 lvl max, or high lvl (since low lvl is kinda useless...), why changing the main point of the game now ? I dont get it.

I want to get lvl 70-80+ on all desynthesis classes, specially for the items I cant trade to ask a friend to do it for me (if all items where tradable, this wouldn't be a problem)

Here is the thing with desynth. Ignoring the Primal Demimateria and CUL any class can get any of the demimateria. The other items you get back are the base mats for the item.

I don't see what the problem with not being able to desynth every possible item in the game. You can still get nearly every item in the game with just 3 classes the only thing that changes is the ease of getting the items. Right now LTW/WVR are the king for FC3s but any class can get them it just takes a little longer / costs a little more.

There really isn't a need to have every desynth leveled.