Option 1: There are no Expertise feats. Instead, all players get a +1 bonus to attack at levels 5, 15, and 25. Any power that doesn’t derive attack bonus from a weapon or implement is +3 Attack at Heroic, +6 Attack at Paragon, and +9 Attack at Epic. Racial attack bonus feats such as Hellfire Blood or Draconic Spellcasting become a +1 untyped bonus to attack and +1 damage of the specified type.
Problem: It’s complicated for new players.
Option 2: Expertise feats are free for all players.
Problem: I have no idea if this actually balances anything or not.