I actually feel like this is a great idea, i think you should also be able to do these things as well;
Lets say I ask Aria to control my volume, {like up or down an amount}, i feel she should be able to do it
Along with the GX player, she should be able to find us music and play it
A few more ideas I had that should be integrated, they are below on bulletin points
Asking her to make a sidebar with research tabs she found
Asking for her to change your GX theme
Having more of a tab instead of a sidebar for her, similar to C.AI
Her being a somewhat welcomer on startup
Her having a voice? For the visually impaired
IF she gets a voice, the voice should have a visual aspect to it, like a circle that moves with the soundwaves
Her being able to help and guide visually impaired people, and describe photos?
Her being able to manage messages and emails for you, along with other accounts and things {IF you opt in for it, obviously}
Her being able to take on a different personality and different traits to better fit the person she is assisting {Maybe even a new name}
Her being able to learn about the individual she helps to better fit them as well?
{I know most of this might not be possible, but the future is ahead of us, and all of these features would be very useful to many <3}