Boy, this is a good question ... I look at ACS 4.2 as being much less
mature than 3.4. I also think it is a more solid base for future
development. There's a lot that needs doing to make ACS 4.2
reasonable for deployment, i.e. a decent admin UI for starters.
A dependency graph would be nice, and a tool to generate dependency
information even nicer - the APM should provide this, I guess you're
saying it doesn't?
As far as where we'll need the most work, folks are starting to e-mail
and post with offers of help so in a few more days I should be getting
a better handle on what we've got covered and what's uncovered in
terms of getting basic stuff up.