Kha Zix's evolved ultimate is lackluster and here's why

If you can remember way way back when evolved R used to reduce incoming damage by 50% and you could basically restealth as soon as you came out of the first stealth to become virtually unkillable, well then Riot deemed this to be op and decided to make it so you have to wait 2 seconds in between each cast of ult. Later down the road Riot then decided that just having the damage reduction on his ultimate in general was op so they completely chopped that off, but they forgot one small detail. The only reason that the 2 second delay in between each cast of ult was added was because being able to restealth immediately combined with 50% damage reduction made an unkillable tank assassin. Now with the damage reduction stripped there is no reason he shouldn't be able to cast his evolved ultimate immediately, because it is his only form of survivability on a currently very squishy . So, what I'm proposing is the 2 second delay in between each cast of ultimate is completely reverted to its original form as it is not necessary anymore and this will make his evolved R competitive with the other evos and overall make him less clunky to play.