Like how you can say "set an alarm for 5 o'clock" to the voice assistant on your phone?
Idk, could be useful, but there are already many options for this outside of the browser.

Ctrl+/ always opens new "chat"

It'd be nice if we could choose for it to either open new ones, or for it to answer in one of the old ones.
A keybind to open Aria in the sidebar would work even better.