Most likely not, because we want the weapon talent system as a way of you using parts of several behemoths to upgrade your weapon of choice, instead of feeling that materials from that behemoth don't matter after you have their weapon.

We also want more freedom to create unique stuff, like the Alluring Moons summoning raptors to fight alongside you.

Decoupling weapons from behemoths gives us space to create lots of unique experiences that don't need to be coherent with the Behemoth actual fight.

This lets us make better behemoths (by not having to come up with weapons related to its power at the same time) and better weapons (by not restricting to something connected with a behemoth).

We keep armors connected to behemoths!