The idea of a president standing before the entire world and acknowledging this country's mistreatment of its first inhabitants is inspiring.
If that were to happen, it would change this hollow apology now being considered into something more. Something likely to elicit hope within even the most cynical of us.
And while it still would ring hollow without immediate action toward real reform, it could light a fire.
And that fire could, finally, give form and substance to this promise of change.
In any case, I lean toward apologies being worthless, not inspiring--unless they're backed by actions. I'd say things like Indian gaming have done more to "heal" Indians than apologies ever would.
For more on the subject, see Apology Is Meaningless and Apologies Aren't Enough.