The history pane is very useful - to a limited point. Yes, it sure is nice to know who made a change. But this is almost useless information if we can't tell what they changed.

It would be much more useful to know "This data field was changed from X to Y on this date by this user."

Don't just say "This account was last changed on this date by this user." A statement like that is almost ominous. If there are several changes, who made which change is much less important than what was changed.

Additionally, it would be extremely helpful if we could run a query on accounts where (for example) the description field was changed, with output showing the before and after settings.