I don't like the idea to stick with a name like bitcoin and just changing it to micro. For the average Joe it is very confusing to talk about "kilo micro bitcoins".

Therefore it is ideal to switch to a completely different name to avoid confusion. It is very hard to convince the whole bitcoin community to switch to some arbitrary new name. And therefore at the moment the best idea is to just state everything in Satoshi or kSatoshi. Very easy and everyone can understand it.