I find most of the augments worthless because they're either underwhelming (2% gains?) or the selection has nothing else that interests me.
I like weapons, I like kinetic weapons. I don't like shooting beams of electricity out of my gun, or lasers or grenade-bullets or heat-seeking plasma (I would say I don't even know how that's possible, but Space Magic will probably be the answer). Some people do. That's entirely fine, great even, glad they like what they've been given.
But give us fire-mode augments (that I can actually buy). Give us caliber augments. Give us augments for permanent but less-powerful ammunition types (instead of the pitiful duration ones). Give us ways to customize our gun without turning it into something that doesn't even resemble what it used to be.
Give us augments to transfer stats from one set of armor to another. Give us a shield popping augment that damages enemies near us like the Nomad has. Hell a lot of the Nomad augments would be great. Supplemental life support? Yes please. Give us augments that activate skills in situations*.
A lot of people say that Andromeda is ruined for them by Ryder's goofiness, well I'm much the same way about a lot of the augments ruining the feel of combat. Not all ideas work, but there are a lot more and a lot more interesting ones than we currently have implemented. That's why I complain about augments. The selection could have been much, much better.
*ex.: You have Concussion Shot, Pull and Shockwave as your three skills, and an augment in your chest that activates Nova (at whatever rank you've got it, no use if you don't unlock it) when you're hit by a melee attack (so long as it's off cooldown).