Indie developer Kraken Games has their sci-fi multiplayer shooter Warside on Steam Greenlight, which still needs votes, and it's an interesting addition because it's a "visceral multiplayer" with a flexible RPG system.
Also it's sci-fi with a deliciously chaotic side-scrolling platform view in 2D. We fight other elite soldiers and even monsters as we compete for resources, with RPG elements for customisation.
Kraken has now revealed the three primary factions in Warside as the New Empire, the Galactic Commune and Corporation Zetta. Four character types then await our selection.
The Galactic Commune are a bunch of red commies striving for freedom and equality on their largely industrial worlds, while the New Empire consists of the old ruling aristocratic families who'd rather everything go back to the old days. Corporation Zetta is a giant conglomerate who only thinks only of total economic dominance.
After we've picked a side there are five different character classes to choose from, with the usual archetypes hiding behind their classifications: Defender (tank), Assault (damage), Infiltrator (damage + CC) and Destroyer (damage AoE) and Medic (healer). There are also four 'character types' that alter base stats.
Check out Kraken Games' Steam Community update on factions, character types and classes for more.