Yes beside not getting in the way and carrying stuff...
Make them be more fun.
Some of the sayings are useful - "use a stamina potion" - useful when I stop looking at my bar and over spam expensive abilities. Other sayings "Let's find a tavern to spend that"...not so much.
Maybe:
Quote Lore
Can they be more like a Cortana assistant (Hey Bastion, how much tempers selling for today, where do I find the refabricated motif, or something like that?)
Change up the sayings - maybe favorites from the ZOS team
Quests - require rapport to be really high to get to the next stage of some plan
When I dance, they dance.
Use random emotes
Help me research - cut down time
Talk to me in Morgan Freeman's voice, or Angela Basset
Use my own voice (i had an old Nokia N8 which I loved, on the mapping app, it allowed you you record your own voice, and play it for directions, required recording my voice)
Hugged me on my birthday
Yes, I understand this is frivolous and would be tough for ZOS to implement - just letting my mind wander.
Thoughts?
Z