Monotonicity is undoubtedly a desirable feature of an electoral method. I do however feel that no method can be perfect
Of course, this is what Arrow proved.
and that other features are more important ( proportional representation of parties, proportional representation of opinion, maximum freedom of voter choice regarding the individuals who represent you, etc).
Just because other features are more important would not necessarily imply that monotonicity would not be a necessary for any good single-seat method.
It just seems silly that an election method which could cause B to win if a single ballot was changed which moved A above B would be considered remotely reasonable.
It is sufficient for me to know that an election method is not monotonic in order to remove it from any further consideration for single-seat elections. I am uncertain as to how it might apply to various PR methods.
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