As I'm sure you noticed, in the trailer we see a raider veteran equipped with power armor. He was literally named "Veteran Raider". Similarly, we saw in Oblivion how Marauders would sometimes be found equipped with full daedric armor - basically breaking the game's economy and balance. As well, it broke the atmosphere/immersion because theres no way a Marauder/Raider would find Daedric/Power armor that easily. Do you think the devs just equipped that raider with power armor for demo purposes or do you think we will see the return of dramatic leveled lists causing the least significant people in the game to have the same stuff our veteran protagonist does? Do you think they gave the raiders power armor because our power armor is obviously being overhauled and it needs some competition? Will this be a rare sight to find a raider or when we reach level 30 will we see them everywhere we go? To me, this can make or break late-gameplay. I'm usually not so dramatic, but nothing makes me more upset than a Beth game throwing rare armor around just because you're high leveled.
On a side note, do you think we can use power armor from the beginning or are we going to have to unlock it like FO3?