I only played a bit of the weaver, but one thing I noticed is that it is kinda awkward to switch attunement. In order to switch your second attunement you have to switch to full attunement before switch your primary to something else.
A way to make this a bit better is if you could right click an element in order to change your secondary attunement to that element. Giving the player a bit more control and making it a bit less awkward.