Spells, auras, abilities that buff, help, directly or indirectly heal yourself and party members, these are all good mechanics to helping cooperation in multiplayer games. And we'll certainly have some of them.
What we don't want though is a situation where you'd say "Ok just sit back and keep us healed." Everyone should be fighting, everyone should be DPS, and the buffs and bonuses that come from certain classes should simply be situational and/or beneficial "icing on the cake".
sink your teeth into the flesh of midnight
night forever more, let them see it has begun