Haven't played in a while, but I wouldn't be worried about a lack of low levels. People are always rerolling characters, mainly because you can't change the way your character is built (skill/stat point build) without making a new character.
It may be hard to find geniune noobs (to play the whole story through with as opposed to power-leveling), or "nice" people, though. For many people I know, Diablo II is the first game that made them wonder, "Why are people such assholes online?"
Fun times...







