The rules on character changing need correction/clarification:
During a round-robin set, both players will use the character they selected at the beginning of that set, for the duration of that set. There is no obligation to play a particular character for the duration of the two-week round robin period, just finish each FT5 with the character you chose at the beginning of that particular FT5.
For the tournament, you must use your chosen character for the duration of a set. Only when you have lost the previous set, can you change your character. The winner of the previous set may not change characters at this time. For example, Omni plays Six in the tournament. Six plays Q and wins the first set 2-0 in a walkover of Omni's Ryu. Before beginning the second set, Omni can change his character - let's say he picks Urien. Six must remain playing Q in the next set. If Six (Q) were to now lose the second set to Omni (Urien), before the start of the third set, Six could change away from Q.
Clear as mud?