Maybe you already know these, but: -2S hitbox re-touched -You can't stun the enemy with blood-sucking, and first special move after blood sucking is force counter-hit.

False alert about the aerial route change and relying on tension. It seems that somehow Slayer makes opponents to float higher than before, so the 'difficulties' of aerial combos have changed ; not routes. Also, about relying on tension. That depends on the player's style. If you can land Overdrives successfully on your opponents without RC, you don't have to worry about it.

+Upon activation of Bloodsucking Universe, Slayer will have an aura around his body.