I edited out the other part of my post but now that I can type this out correctly, let me explain what I mean.
First of all, Pneuma will not do shit against an LK. They have Charge Attack and Bowling Bash. Wasting a slot on an RSX isn't going to help much because LK doesn't need Spiral to do damage. Pneuma will not stop them (like Zergling said) from doing damage.
LK has an answer for EVERYTHING. Kiting them is really, really hard because of Charge Attack, not to mention they have Spear Boomerang for ranged damage. Charge Attack not only knocks you back (out of Pneuma) and leaves you in perfect range for SP spam, but it can be spammed at a retarded speed, so they can always instantly close distance. Don't even get me started on melee/up-close classes on LK -- they hands-down get slaughtered. LK has some of the highest damage output in the game and some of the highest HP in the game. They don't need access to infinite stunlock (via SP) because that, along with the rest of their options and abilities, ruins up-close classes' chances against an LK. Nor do they need the ability to instantly close the distance between opponents (via CA) because that, along with the rest of their options and abilities, ruins up-close classes' chances against an LK. Other than the delay on these two skills, LK is fine imo.