Yeah. Whatever happened to options, not restrictions? It really sucks when there's something cool in the rulebook that you'd like your character to be able to do, but you can't because there's a price to be paid for it.
You know what I say? Unlimited options! You only need one class: adventurer. All the skills, powers, feats, weapons, armor, spells, etc will be usable by all characters, at any time, at will, with no penalties or prerequisites. That way nothing ever gets in the way of the fun of being able to use the cool stuff in the rulebook.
"But Olgar," I hear you say, "won't that be broken?" Absolutely not! You can still only perform one action a round, so no matter what you choose to do, everyone else can always do something equally powerful. No one will ever be overshadowed again, because anything his character can do, mine can do equally well or better!