KRATH belongs in a new category - Mercenaries. He is Hired Gun caliber, a Gunslinger of amazing talents.
Jbaum is quite possibly the most underrated threat ever. Always consistent, he is steady and methodical (if not a bit conservative) in eradicating opponents. If he loads in a favorable spot, he can influence the entire flow of a game. He is known as one of the most reliable teammates in the game.
Doci is another highly skilled player that often gives off the impression of toying with his victims. He is not above rage-purging you as a neighboring enemy, and kill every family on your Homeworld just for spite, and you'll like it. His in-game chat often borders on a mix of fellow player beratement, and chastising opponents for thinking they have any business in the game in the first place.
URSolar is a guy that has paid his dues over hundreds of games, and will punish you if you underestimate him. His grasp of game dynamics is solid, and he is a team player, although recently he has started to demonstrate the "lonely-at-the-top" syndrome where he will lean in an arrogant direction with his passive aggressive questions regarding what he considers sub-par game-play on the part of others.
Carpetbomb is another player with solid skills, and an asset to your team with a wide variety of strategies in his bag of tricks. Seldom cocky, but he has the moves to back up any bullshit that comes his way.
DaKnife could very well belong in the wildcard category - he is reliable as long as he is not the top dog on a team as he cannot carry the load like a top tier on his own, and is much better suited to a support role as far as rushing goes. Given a good launch placement, he consistently over performs, and even in suicide he will turtle with the best of them as long as he has early feed. He rarely gets bent out of shape, but reserves his scathing remarks for those that deserve it.
And, in the new to rebellion category, (players that didn't play Diplomacy):
JameX - I like this guys straight ahead attitude and more than competent skill sets. He weathers the storm quite well when saddled with less than experienced teammates, and works with the hand he's dealt. He has a knack for reading the board as it were, and advancing preparations to strike when the time is right. His grasp of rock-paper-scissors counters is sound, and he is a formidable micro manager. Always has a kind word after games, and openly discusses do's and don't s with new players. Good addition to the community.