Firstly don't be a mug. Piracy costs SI money. Why do you think they brought in purchasable unlockables? Because of those scumbags at Skidrow and other scumbag pirates cracking the game so people can get the game for nothing, while myself and others pay for it. It's because of pirates that they chose Steam for this and it's worked. They get the torrent but don't get the full benefits and it crashes quite a bit which makes me happy. If I and other people can save up for it and pay there's virtually no excuse whatsoever why other people can't. It's a luxury. If they can't afford it either a) don't buy it or b) save up like I did.
But re: the bugs/flaws there are hotfixes/patches being worked on to resolve the issues. Until then, study tactics, team formations, player suitability for the formations, everything. I had to and it's working out fine.
Good luck