Do you change your field upgrade mid-game?

Do you guys change your field upgrades in-game? If so, at what levels and which upgrades do you use? I’ve been partial to aether shroud to help other players revive but this only works if players are close together. It works great to run away from hordes but not if you’re in a tight space. They just bump into you.

What augments have you noticed that work the best?