They should have made Forked and Fleeting OGCDs or permanent combos like DRG's Wheeling Thrust and Fang & Claw,of course, that would be opposing the job's flexibility but at least we can see the clear intention from dev. team.
But this half-ass Raiton pre-use is just weird,to be honest. It's not neccessary at all.
30 sec duration for GCD is stupid but 30 sec duration for OGCD is good.
If they're OGCD, Since both skills are Rush attack. you can hold them a bit, especially when you know there will be mechanics that you need move away from boss and utilize them just like DRG's Stardiver.

Forked and Fleeting have potential to evolve NiN in this expansion but not the way they are now.
They need to make it clear which direction they want NiN to go.