Sorry for the long delay in responses. I haven't been in a place or mood for posting in a while. In addition I wrapped up my long running H+I campaign and started up a Star Wars D6 game with the same players.
Although it's not relevant to H+I here is a comparison of damage results between the first edition (1E) and the second edition (2E). The second edition revised and expanded has the same damage results as 2E.