Re: I'd murder for...
Actually, you're wrong on that. The Nexus One had a microsd slot.
A few reasons why I like a large amount of storage 1. I have more than 16GB of music. 2. Google Music isn't yet active in the UK like in the US (as in streaming from the cloud, but I understand this might be available next month) 3. Streaming music over a mobile network is very expensive, because it uses lots of data. So therefore isn't practical hence I need to store it on an sd card.
I might hold back and see if Google release a 32GB or 64GB Nexus 4. I'm still of the preference about screen size though, 4.3" is my sweet spot.