Not quite everyone - I've been developing in Java (among other things) for around ten years with Vim, and I personally know a few others using either Vim or Ema

Not quite everyone - I've been developing in Java (among other things) for around ten years with Vim, and I personally know a few others using either Vim or Emacs exclusively. Unfortunately, although we fit the "don't use Eclipse extensively" use case, this probably doesn't help the OP very much since it's doubtful that Yet Another Editor is going to be compelling to people heavily invested in their chosen tools. On the other hand, what I would like to see is something that can run some Eclipse plugins, e.g. the BPEL editor, without needing to run the full platform.