I hope Miles 'uses his powers' for past dead people. Not neccessarily every dead person, but specific ones, like:
(Bracketed are my own thoughts on the matter) Adam and Eve skeletons - We'll find out their identities! (Rose and Bernard?)
Eko - What does his final words to Locke, "you're next" mean? (Monster/Nemesis candidate as a loophole?)
Nikki and Paulo - Mile's favorite thing in the world: money. Specifically, the $8 million diamonds buried with them!
Jacob - Like Eko, what's "They're coming" mean? (Losties? Widmore? Who knows?)
Libby - Just for Hurley, he deserves that much after all he's been through
any thoughts? It seems very easy to abuse his power!