Alright, I know this has been talked about before, like a lot. And please, if this specific idea has been thrown around already (I have done a search), let me know!
Anyways, the main point of this is that, followers/companions would be awesome in the game! Here's how I'd expect would be the easiest way to go about it:
1) A random encounter/normal encounter have certain actions that would lead to a person/animal/robot/etc. wanting or being forced to join your side.
2)The encounter area spawning an NPC that consistently follows the player around** BUT, have him target only specific creatures or target everything besides the player in combat situations (with whatever tweaks need to be made for balance).
I just think it would be easier than implementing a full follower system. I mean, we've already got NPCs that don't target members of the same faction. And, I'm assuming that there are going to be new NPCs eventually.
P.s. Yell at me if I've done something wrong, please?