Well the knockback for the shotgun, while I personnaly dislike it has minimal effect on its aim. (You usually have to reaim every shot anyways)
The Chainguns recoil is TOO much, as you will 'slide' all OVER the place when using it without a bsuit (and even there -- too much push-back).
Its really more agravatingly annoying than a nerf.
The Xael Mk2 is just terrifing for everyone in close quarters, which IMHO makes things more fun!
Was there any code done for the flying alien? Good luck with that, Its about time those jetpackers got a taste of their own medicine.