Sandstorm Republic [SREP]
The Sky Slicers [TAG]
Finest Chaotic Ingot [FCI]
Les Ferrailleurs [..]
Ecchi Lolis Desu [ERO]
The Sprecialist [2620]
STRAY DAGZ [DAGZ]
Aeterna [TAG]
The Grim Reapers [Grim]
Angry Army [AJSA]
CAKE [CAKE]
SPQR [SPQR]
Crimson Sky Menace [CSM]
Clan Clan [Clan]
Sacrile [SAC]
The Bards [TAG]
The Lols[Tete de pirate]
The Brotherhood [TB]
the halo effect [Halo]
The Bully Boys [TBB]
Sky Badgers Inc [BDGR]
The Trading Troops
Clan Not Found [404]
king's Gambit [KG]
Go Underneath or run [GUNR]
Amon-Ra Priest [TAG]
Wings Of Daedalus [WoD]
Penguins Gone Wild [PGW]
Zill's merry men[mm]
29,
lacks Gents, Rydr, Hydra, Star bubbles, and some more i forgot 
Of these teams listed, the only ones that have
ever participated in anything competitive are: Grim Reapers, Cake, SPQR, Crimson Sky Menace, Clan Clan, Sacrilege, Bards in tandem with Star Bubbles to make StarBards, The Brotherhood/Hydra (same clan/team), The Bully Boys, Clan Not Found, Wings of Daedalus, Zill's Merry Men, Gentlemen, and Ryder. For the sake of the argument, I'll also toss in Ducks because you didn't include them. So of your 30+/-, we've narrowed down the list to 14 clans and competitive teams.
Of these: Grim Reapers have disbanded/gone inactive/are dead for the most part. Cake, Sacrilege, Clan Not Found, The Bully Boys, and Zill's Merry Men's competitive teams have all been disbanded for one reason or another (or at the very least, they aren't active in any of the recent events in the competitive scene). Clan Clan, The Brotherhood/Hydra, and Crimson Sky Menace have teams that are starting to come back I believe, though I'm not sure about any activity they have in a tournaments.
This narrows any teams that would "more than likely" participate in any competitive tournament to SPQR, StarBards, Gentlemen, Ryder, and Ducks, so 5 teams. Now, obviously, any of the clans/teams either I or you mentioned could join this League. But yes, your initial list was far too ambitious.
Sure ! That's why they can provide one crew and find another one to play with.
While this seems like a good idea at first, it really falls apart when you consider just how complex a successful Guns of Icarus competitive team has to be. Very rarely has 2 clans coming together been successful in any event. The only examples that come to my mind are the Crimson Sky Ryders, Holy Roman Army, and more recently StarBards. The catch, is that all of these teams organized outside of the competitive events that they participated in, as opposed to being thrown together by the event organizers. Most seriously competitive tournaments require a team to be 8 people because of the organization required in the team for it to be...well, competitive. If you take 1 ship of 4 people and throw them with another ship of 4 people that they've never played with before, and then make them face someone who has a full team of 8 well organized people, on 2 communicating ships. Its not going to be much of a competitive match. Frankly speaking, its going to be a walk-over. So while the idea of signing up "half" of a team, or 1 ship/4 players, is a nice idea of getting more people involved, realistically in an actual competitive tournament they're not going to stand much of a chance against any of the well organized teams of 8 players/2 ships. And even if you have it so teams that are made up of 2 half combined teams fight only other teams made up of 2 half combined teams, its not going to be very interesting to watch, its going to be a pub-styled match with little organization on the respective teams.
Just an opinion.
