I agree with DanMCS. I'd try PL5 or PL6, or use PL10 but with 6 as the power cap, encouraging people to be less focus-powered but more flexible by having more abilities.
For a quick example, let's try "Dirk Lancer versus the Nazi Rocket-Women from Space!"
My Heroes:
Dirk Lancer: Captain of HERO-Force. An iron-jawed American hero who never gives up, never gives in, and always survives to save the day, keeping his team going through grit and determination.
How we make him: Saves, a few ranks in Strike, a Gun, and then the big powers -- Luck and/or Boost, both of which he takes Extras on to affect his allies as well as himself. Basically, when our hero calls out, "HERO-Force, assemble!", his team-mates know that it's time to beat the bad guys.
Virginia Dare: Exotic scarlet-tressed daughter of British aristocracy trained by the ancient masters of the East in the ways of the ninja. Cool and deadly, she declares that no man will ever make her decisions for her... but she'll follow Dirk Lancer to the ends of the world...
How we make her: Super-Dex or Super-Speed, Strike, and some movement power -- a combination of Leaping and Clinging, possibly. Not 10 ranks -- she can't leap to the top of a building, but she can casually do that "back and forth between the walls" thing up twenty feet or so, and she can climb walls in ways that make Dirk Lancer just shake his head and laugh at her audacity.
Rex Archer: Cynical and quiet, the team's ace sharpshooter and rocket-boosted master of the skies has suffered losses in his life. He may never open his heart to a woman again, but Dirk Lancer gives him something to fight for.
How we make him: High BAB and power stunts on his weapon power (so that he can shoot a nearby awning rope to Snare someone, or shoot an oil tank to make oil spray out and Slick the area nearby). Add in Flight for his rocket-pack.
Ol' Doc: Hypnotized by a yogi and taught the mysteries of the mind, Ol' Doc can patch up folks who are hurt, and he's been a vital asset when the team was attacked by evil nazi dolphins whose sonar had been amplified by Hitler's insidious mind-control rays.
How we make him: A little Healing. Super-Wisdom. Mind-Control (to a limited degree) and possibly something like Invisibility (modified to take a Will save to negate it and flaw it so that it doesn't work on machines -- like the Shadow, he's blanking himself out of people's minds). For emergencies, a Mental Blast, possibly flawed so that it only works against people who have and are currently using mental attack powers.
Little Timmy Lancer: Dirk's irrepressible nephew often tags along on the team's adventures. Initially, he just got rescued a lot, but when Doctor Muhrdehr's intellect-enhancing radiation struck Timmy, the young lad became a brilliant scientist, able to disable a death ray or make an anti-Martian gas with nothing more than soda pop, a bottle of aspirin, and a little baking powder.
How we make him: Super-Intelligence, Gadgets. And have him say "Golly!" a lot.
My Villains:
Amazonia, the Nazi Rocket Woman from Space: Her spaceships brought her to Earth in search of men to take as slaves in order to further her people. Hitler's promise of the super-man enticed her to trade rocket-packs and ray guns for the promise of proud Aryan male volunteers once the world was conquered. If she can be convinced of Hitler's evil ways, she might turn against him -- or perhaps the heroism of Dirk Lancer will simply make her realize that the super-man already exists...
How we make her: Oh, man, we go all out. She's got a Force Field/Energy Field. She's got Energy Blasts that can also Snare people. She's probably got Strike, too, or possibly a giant rod that is surrounded by a field of energy. And we give her some good saves, so that one lucky hit doesn't knock her flat on her sequin-bikini'd butt.
Colonel Von Drech: The foul-minded Nazi warleader and mad scientist who accompanies Amazonia, fooling her with his insidious lies. Amazonia's people are still vulnerable to mind-control, and Von Drech is wearing one of Tesla's artifacts, an electrical ring that lets his voice bypass the conscious brain and directly manipulate the mind of the listener.
How we make him: Strong and tough, but no more so than Dirk Lancer, and ideally about one PL lower. A few ranks in Gadgets, since he's a mad scientist. His Tesla ring is Mind Control with the Subtle Extra, so that nobody can detect it happening, and with the Area extra as well.
Flying ray-gun-wielding stormtroopers: These Nazi fighters are the cream of the crop, trained to use Amazonia's new technologies. If Dirk Lancer and HERO-Force don't get past them to Colonel Von Drech and Amazonia, our schoolchildren will be saluting these folks instead of the flag!
How we make them: PL3 Minions with high Str, Dex, and Con, so they don't necessarily die just from one hit. (I'm thinking 16, 16, 16, not 20, 20, 20). They get Flight and Weapon (for the ray gun), and that's about it. If they ever roll a 1 on an attack, it means their ray gun has exploded. If they ever roll a 1 on a damage save, it means their rocket-pack has exploded. A critical hit from the heroes means the same thing.
General Nazi Rocket-Women from Space: PL2, with Rocket and Jet packs as well as a light Force Field or something. But really, most of the Nazi Rocket Women don't fight. They somehow instinctively understand that their queen is doing something wrong, and when they see the strong and handsome members of HERO-Force, they'll probably want to help by leading them secretly to Amazonia's chambers.
Take that, add a catchphrase like:
Dirk: HERO Force, assemble! Honor!
Virginia: Equality!
Rex: Respect!
Doc: Order!
Timmy: And I'm Timmy!
And you're golden. Pulp-away, M&M-style!