When the first Cr-48 reviews popped up, I had exactly this question: "What kind of setup would you want for development?" (Or maybe writing papers in TeX.) ymacs seems like a good start for a web-based editor, but it is useless without filesystem support (C-x C-f directly to Dropbox?) Without ssh'ing into a home box somewhere, I'm not sure what the cloud-based compile/execute/debug development model is supposed to be.

Any other ideas what development should look like in the idea cloud-based world?