Can anyone with access to the core books chime in about whether KotS's rules are properly 4e, or if they're stripped-down to simplify gameplay? I recall the introductory adventure box set for 3e, and some of the monsters and rules were very bare-bones. My gaming group's going to be using KotS to judge whether 4e is a viable system to use, so I'd be sad if it turned out that the included rules and monsters weren't using a complete and proper 4e ruleset.