Siri...

So i've been gradually starting to depend on Siri quite a bit to get things done, and i've noticed quite a number of things that are missing. Feel free to contribute by commenting what you think is missing from Siri, and the overall Siri experience. For me the top things that are missing is the ability to active Siri handsfree and The missing ability to change what unit Siri presents its data in. For example when i ask how tall a building is, it speaks the answer in feet, whereas my preference would be in metres.

Post the features you'd like to see implemented in Siri.