Ninja's new lvl90 skill Raiju comes in two parts, Fleeting Raiju and Forked Raiju. Both of them must be used right after each Raiton as part of the new three part combo or you will lose them.
Using Throwing Dagger removes the Raiju Ready buff.
Both Raiju are gap closers.

These are both issues that will cause many problems in high end content on NIN.
For starters, Ninjas optimal opener includes using all of our Raitons and also TenChiJin in the first 20 seconds of the fight but because of Raiju we now have to use 6 gap closers during this short duration and this pattern will continue throughout the fight causing us to gap close 4 times every 60 seconds with 2 more every 120 seconds for a total of 6.

I repeat, that is a total of 4 or 6 every minute.

It stands to reason that if any mechanics were to show up at all during the time that we use our burst that make us move then we will not be able to use Raiton for uptime anymore due to its combo actions forcing us to jump to the boss twice in a row and we cannot use Throwing Dagger after Raiton because it will cancel the Raiju Ready buff despite Yoshida saying that melees ranged attacks will no longer break combos.

I ask for a major change to Raiju as in its current state it will completely ruin the point of even having ranged GCDs like Raiton. Either remove all gap closers from the Raiju or remove the second one at a bare minimum. Another way to at least make them less limiting is allow us to delay them like Ruin 4 stacks or make them OGCDs that we can use when we want.

Ninja is NOT Dragoon. Do not give us more jumping skills than they have, jumping is Dragoons identity and Ninjas is its ninjutsu and the free movement that it brings. In its current state come Endwalker, Ninja will be the new floor tank because of this skill. Please fix this before a repeat of 5.0 happens.