Twas a small joke.
I think crossovers are a VITAL part to cheerleading, but with limitations. I am personally for 25% crossover rate of maximum size, no level to level restrictions.
Then if a team chooses to use 5 crossovers to build their team, and someone gets injured last minute and they cannot crossover someone else to fillin... that is a choice they made. It will keep people from filling up all the spots for the JIC situation. As well, if someone is from a small gym and they dont have another similar level to crossover from they are not put in a bind. Yes a level 5 girl can really help out a level 3 team by being last pass, but in the end it would JUST be last pass, and when was the last time you saw a team JUST win because of last pass?