With the announcement of the new Blackwing Industries group, and the recent upgrade to the Warriors, I think the Homecoming team have proven they have what it takes to modernize the look and feel of our favorite factions. And so, I'd like to propose a couple more groups in dire need of a makeover.
#1) The Outcasts. The four elements theme they have *is* iconic, but there have been so many elemental themed powers added to the game, I think it would benefit them if more elements were added to their roster. Water, plants, weather, even darkness: all these and more could make for some interesting bad guys to fight.
The Outcasts are also in need of some fashion upgrades. Right now, they're just wearing t-shirts and jeans, and while I don't think they need anything extravagant, they definitely need something more interesting.
#2) The Banished Pantheon. Frankly, the group's whole identity took a hard left when Dark Astoria was updated. Their pulpy "Darkest Africa" look was perfectly serviceable when they were just spooky cultists, but now that they've moved deep into Lovecraftian territory, I think they're due for an overhaul.
Also, they're kinda boring to look at. They have two minions types, big zombie and small zombie, and their shamans all have the same look. More variety would be a welcome change.
#3) The Trolls. Not so much their looks, mind you. The simple clothes and green skin make for a great contrast, but I think they could do with more variety in their powers. Right now, all they have is Big and Strongtm; their minions are strong, the lieutenants are strong and tough, and their bosses are strong, tough, and throw rocks. I think some trolls with Titan Weapons, more variety of earth-based powers, and more bizarre physical transformations could go a long way.
I'm sure there are more groups who could benefit from an upgrade, but these three stick out the most to me.
EDIT: Figured I'd add groups mentioned in the discussion.
* Wyvern: Could be improved with the Tactical Arrow powerset.
* The Cabal: Has a whole new Storm Blast set to play with.
* Malta: Arsenal Control. God help us, if they get that!
* Legacy Chain: Seismic Blast could be a great tool in their arsenal.