YUP. Sorry.Uh, I think you meant to say 'I think the feats and powers from Dragon magazine can probably be safely excluded', right? Our group has banned almost all of the Dragon material (excepting a few backgrounds) and I consider that a very good decision.
Oh yeah, backgrounds, I forgot about them. There's a ton of them, too! Actually most of them are fine but there was an early set of backgrounds where you could take something like "Born Under A Bad Sign" and get a bonus to HP, which is maybe a little too good for a simple background.
And of course there are themes. I think the main discussion you need to have about themes is whether or not your table is using them. Otherwise you are gonna see your min-maxer tricked out with a theme and your other players going "What?"