CA would probably be pretty fucked with crowdfunding because a lot of people blame the studio for the DLC policy, so lots of bad PR.
Sucks though, without the shit DLC thing I'd buy Total Wars, now I just pirate them instead.
Whilst there are still people who think CA is at fault, many know it's SEGA. If CA were to break away and stated in a crowd funding campaign that it was because they were pushed to force games out of the door before they were ready and because of the ridiculous amount of DLC which was merely cut content from the game, those CA nay sayers would soon realise.
BUT, when these guys are sitting on salaries, I assume they're nice salaries too, for them to be such bitches for SEGA, I can't see them jumping ship to go indie and take the risk of losing money. You can't blame them tbh, like I said before, they have their own bills to pay and perhaps families of their own and those that don't have much responsibility wouldn't make up enough of the team to make a game on Total Wars scope in a reasonable amount of years. They'd need a new engine and everything I imagine so whilst they could recruit from the TW community and elsewhere to fill in the gaps, it would be a huge funding effort.
Perhaps the only way it would work is if the entire CA team just halted work, told SEGA to give them more control over the game and time limits or they walk, but again, would any of them risk that.