Well, that's pretty much been the pattern of many of 4e's fixes to 3e's thorny problems. We made combat simpler by getting rid of all the maneuvers! We fixed Dispel Magic by removing all the stuff it used to be able to do! So in 4e terms, yes, you did deliver.Shazman said:They said that any combo of multiclassing works. But they eliminated multiclassing. It isn't being truthful to call the dabbling feats multiclassing. And you definitely can't do a three class combo with these new "mulitclassing" rules. If I promised that 4E would have a spellcasing system that was balanced and worked for everyone and then got rid of spellcasting alltogether, did I deliver what I promised? I think not.
But once again, it is too early to say what you "can" and "cannot" do with multiclassing. We only have half the picture - the heroic tier half. The paragon tier multiclass option is still unknown to us. Can you pick a 2nd multiclass as your paragon path? Because that would result in a three-class combo. But we don't know if it would be allowed (and even if not, it would probably be very easy to houserule). And I think others have looked at the power progression from the Tiers excerpt and posited that if you take the 4 heroic feats, and if the paragon multiclass gives you cross-class powers in place of the paragon powers (a likely scenario), you end up with close to a 50/50 (or was it 60/40?) power split. And the powers are the class-defining abilities.