One of the few things I've noticed in current VW images that I actually prefer is the tracing inspector approach. I don't imagine it would be terribly hard to implement in Squeak and in fact have a faint tickling in the back of my mind (but it could be termites) that I've seen such a thing.
tim -- tim Rowledge; tim@rowledge.org; http://www.rowledge.org/tim Strange OpCodes: REP: Randomly Execute Programmers