We still get a lot of intermittent 'Do X and Y stack' questions, so its clear that a basic part of game play isn't coming over. We need some way to clearly teach the way bonuses work in D&D, perhaps a quest on Korthose where your given an item known to clash with starting gear only to be told 'Oh that's no good, here have [item] with [different] bonus.' Going on to explain the interactions?