Just watched the jetpack video. Reminds me of Transformer and old Japanese anime.
I think to counter the Helghast's angular, sleek high-tech look, Guerilla Games should introduce Sol Bianca's art style to the Earth forces. May be KZ4, if not KZ3 ?
I liked Sol Bianca because of the following concepts:
* The white ship's UI is designed around plants and garden, representative of Earth.
* Unlike old school Star Trek space travel, they had space jump right on the surface of the planet ocean, which was very cool (at that time).
* Beyond photon torpedoes and straight lasers, Sol Bianca employed a "water-like" laser that whips and cuts through enemy ships -- like swinging/flinging your home's shower head.
[PS Move]
* Its main weaponry is a holographic goddess with bow (like Artemis). [Think 3D and PS Move]
Except for the "water" laser, you can see all of the above in this video:
After that, may be I'll like the Earth forces more. ;-)
EDIT: The UCN is said to be more advanced than the ISA right ?