UI 'First Crack'

For a first run at the UI, things I have been considering

Navigation

• zoom in / out
• click & drag
• event firing display? i.e. less ambiguity as to when things are 'happening'

Prettyness

• square boxes (no 'mashed-together boxes')
• collapse-able preview windows
• abstraction-at-levels (i.e. when zoomed out, less detail)