I guess in one way at least you are right..marth mains can adapt by choosing to adopt a secondary...it's just annoying because if your opponent has a secondary (floaty spacie being the best combination now) then, you are now forced to adopt a secondary to survive. I guess in terms of balance i can adjust, and the rule set is their prerogative of course and I don't fault them for it, but if they choose to adopt a rule set that many people disagree with then they have to accept that some of the people who would normally show up will not. I agree with leffen's statements in the thread; i would not risk flying all the way over to play in that ruleset if I were a marth, falcon, or even really sheik main..though sheik suffers less than the other two i would think.
Also, for those people that do not have good secondaries already, they had better hurry up and learn. Getting a secondary to adequate levels given the many matchups in this game is no simple task.
I guess in that sense, I'm not that annoyed at the ruleset, I just prefer rule sets that do not force multiple character usage. Honestly I have less reason to complain than most, my fox is already at the same level roughly as my marth; i just don't like playing him.
also i think what pissed me off the most is that people in the FC thread basically said you're a ****ing moron if you don't go to FC because you dno't like the ruleset. I mean what the hell? if you disagree with something, should you support it wholeheartedly???