plenty of problems with this "demand"
a) why no switching? that just means "I want to kill myself if my current Pokemon just can't handle Shedinja"
b) define "joke moves"
c) once again, this rule seems foolish and irrelvant... plus there is no such thing as "leader of the team," unless it means your favorite Pokemon. Keep in mind that there is no such thing as "strongest" Pokemon
d) so a whole team of 6 with nothing but the common movesets...? That makes your team rather vulnerable because the opponents can easily predict what moves you have, and in return your opponents will act in advance