I wouldn't even mind that some of our talents are implemented with such delay if they were even the least bit interesting. But they're usually not. Just look at the last talent row - it got some half-hearted iteration in BfA. All we've got is Secret Technique and Shuriken Storm - both pretty lame abilities.
Kyrian is gonna be akward for Sub on account of the random combo points generated by our auto attacks. On top of that, it doesn't mesh with out burst.