So based on what I understand from the patch notes.

Forked and Fleeting are now the same, one is just charge and the other is no charge ( charge as in '' rush to target '' ).
So if you didn't like the spammy nature there will now be less variety to it even ( in terms of animation ? ).

Phantom Kamaitachi also no longer requires a Bunshin stack and you don't lose it after you use up your Bunshin stacks you've got 45 sec to use it.

Hmm and that's it.
The potency buffs were nice at least I wonder if it's going to be enough tho.
Forked and Fleeting are now 560.

The thing that stands out to me however with Raiju is that it doesn't say if you only get one cast from Raiton now or if it's still two.
All it says is '' The status effect granted upon execution has been changed from "Forked Raiju Ready" to "Raiju Ready."
The status effect duration has been increased from 15 to 30 seconds. ''

That makes me think you can only use Raiju once instead of twice <_<.
Since both now use up '' Raiju Ready '' instead.
But we'll see I guess servers soon up again.

I didn't read anything about being able to use weapon skills with Raiju tho.
Only a potency increase and a separation of them so that one is now just a melee.
Which imo at least was a non-issue to begin with nothing will actually change unless I guess maybe the animation changed for the melee.