Man, fuck System Shock Infinite.
First, it kills any atmosphere by adding a ghostly side-kick/love interest that appears every 5 seconds to shout some baldy voiced fake french accent nonsense ("we must find a way to stop SHODAN, mon ami"). Not happy with that, enemies are level scaled. Expect zombies mid-game to one-shot you even when wearing armor, unless you boost endurance. Then it completely fucks resource management and the combat by making enemies immune to most weapons. Turrets, robots and cameras can only be destroyed by energy weapons, monkeys only by psi blasts and mid-wifes only by fucking explosives! Want to fire a grenade at turrets or use the laser rapier on zombies? TOO BAD. Also, they removed the cross-hair in favor of auto-aim, cause fuck you.
I downloaded it because I was interested in the scenes on the trailed where you use time tears to save the crew of the Von Braun (yeah, don't ask), but it's really just the original campaign with 1% new stuff (besides the companion). I'm in the middle of the Hydroponics level and still haven't seen anything new worthwhile, like the scenes in the trailer where you fight besides the crew members.
Also, they added Bioshock's "morality", where you find a past copy of yourself and can hack it to gain knowledge to save crew members, or salvage it to gain upgrade modules. Our choices lead to various good & bad endings.
In the end, I'm not sure if the mod is absolute shit, or if it succeeds perfectly at its goal of making a System Shock meets Bioshock: Infinite experience.