Been a bit but I had the same exact question.
I’m working on a low magic LOTR setting and wondered what to do with powers and augmentation on the ME character sheets.
I could just make a LOTR specific character sheet (which I’ll likely do) but I think I’ve settled on a couple of ideas.
Powers - these can be cultural virtues a la The One Ring 1e. Essentially a form of Milestone that is specific to the Lifeform your PC is. The key is that they can’t be taken away and I prefer them to be gameplay focused rather than flat stat bonuses. Since powers are only really suppose to be added during char creation I’ll be creating a tiered version of their cultural blessing to do essentially the same thing minus the SP cost.
Augmentations- these can be cultural rewards (TOR1e) in the sense that they are precious weapons, Armor, and items that aren’t easily broken via “plot armor” or whatever you want to use to justify. Initially I don’t really like this but it bugs me having that on the character sheet haha.
Until I redo the character sheet that’s what I’ve been doing.