No these were just class utility powers for the PHB martials, theres tons more if you delve into the PHB II, X Power and other splatbooks. Wouldnt be hard to cherrypick from the casters too, but i thought that list was big enough to start with.
Both are almost the same really, since prof bonus scales by level (+2 at level 1 plus an additional 1 every 4 levels).
Expertise doesnt increase your prof bonus but allows you to apply it twice. There is the ioun stone that does increase your prof bonus by 1, but thats a Very Rare or Legendary magic item and not any more gamebreaking than anything else at that point (book of stat increase or robe of the archmagi for example)