The perks of PLing were huge in EQ. Should they be? Definitely not. But should it be prevented altogether? Definitely not.
If we're going to get down to details, I'm of the opinion that a low level player should be able to benefit from the assistance of a high level player. It just shouldn't yield the gains it did in classic EQ. For instance, if a friend does 49% of the damage to a mob or heals the player for the same, they should receive 51% of the experience. This will effectively make powerleveling a safer and slightly more efficient way of soloing. Still, it should yield considerably less experience than a group, but if two players want to just hang out on the outskirts of an area and do their own thing, they should be able to. It should be allowed, but not encouraged.
What should be encouraged is grouping, and for the sake of efficiency (in a game full of inconveniences standing in the way of efficiency), players should look to their peers rather than only people they already know. That was a huge difference between classic EQ, and current games. You grouped with new people all the time because it was necessary to get anything done.
None of these things have anything to do with me wanting an easier game.