My content wish list:

Zones with interesting story arcs.
New and unique things to do in these zones.
Super hero teams to fight along side with.
Villain groups, villains and villain teams that cause normal super hero problems.
End game content.
Crafting that is actually worth while.
Aura slots.

To save kittens in trees and help the police and fire fighters.

I agree with everything you said on your list. I know we help firefighters at least once. I'd like to see consequences for failed attempts at Open Missions.

Like if we don't stop Mega D in time it continues on it's rampage maybe even increasing the number of Destroid enemies in the area signifying that it is controlled by Destroid forces.

On a side note: Is there an in game reason why Ren Center is protected from enemies? Just a piece of lore would suffice.

I'm wondering rather the opposite : with all the heroes roaming and questing, is there any ingame reason why Millenium City is so overcrowded by villains, gangsters, demons, etc....?

One word: Incompetence. :p

wut? I DO have DW therefore I can't be incompetent. :p

Not you, silly. The Champions! :D

Yeah if the Champions are so great why are we going around doing everything for them? Or when they do appear in a mission why are they usually defeated?

Am I the only one who wants to earn EXP doing something other than beating enemies to a pulp? Like maybe either once or twice a day MAX we could do research in our hideout (if you have a hideout) or save kittens in a tree or maybe even pick up civilians who are trapped somewhere and carry them to a safe spot. All with no violence, not all heroes fight things to become better heroes.

I'm worrying too about the new contents as it seems they're giving up on the game theme in favor of more new dark/evil/demonic/roin'esh/creepy/spooky contents.

I got it that dark is cooler but it's cool... one moment, after that it's clouding the game theme.
What next? oO

I was kinda hoping for more Sci-Fi stuff, but the campy Sci-Fi stuff that isn't dark but just so over the top that it's light-hearted fun and not a slog though a bad Sci-Fi film cliché.

Quoted, bolded, underlined and errrr..... for emphasis.