No. The games are designed to be playable without mods. There are people that play wow and can down everything without DBM or the like. Hell, the encounters in EQ were twice the size at 54 man, and some of the end game fights were at least as challenging as the HM Raids. OMM comes to mind as does a few I cant remember the names to. We downed those encounters without any addons.Current content isn't really that difficult, in comparison to the number of things thrown at you in a WoW encounters. Honestly, I attribute that to the lack of a DBM-like mod. You can't really put in a lot of the mechanics that WoW does with out a mod like that.