The DCUO allows you to wear customized suits. I found so far, about 15 styles. There is more. Which makes for interesting character visuals. Plus think of this... How many DC superheros and villians are there? So it is not a city full of tights.
I have yet to see the same hero's/villian's style in any of the toons folks are creating.
There is Gotham and there is Metropolis. Which you have to use the Watchtower/Hall of Doom to switch over to the cities.. Which makes for a totally different feeling in the same game. Not barrring that there is a PvE environment and a PvP. Then it has PvP events via Alerts and such.
...Plus you can be a Villian (Hall of Doom), or you can be a Hero (Watchtower). So that adds even more to the variety of the visuals. Plus the quests.
I did some of the quests in a group. For the most part I am solo. Not bad going alone, but it is best to be in a party.
At first I thought it would be kind of cheezy, but this game is not what I expected in a superhero MMO. My toon is mentored by Superman, so I can fly, but I use gadgets(Batman), rifle mainly. Which I like. Since I can hover and use ranged attacks. I was going to go another gadget route, but I like the rifle.
I wanted to get Green Lantern or Batman. But in the beta, I think it is going to be something special for pre-orders or something... Not sure.