Forum:XYZ weakness

Does any one else think making a set number of XYZ for a monster made it a big weakness? I mean not all XYZ have set power per rank utopia being one of the stronger ones I have seen. A lot of XYZ also say once per turn or have a pretty big weakness once there out of materials (which as far as I know of there is no way to add more). So would it have been better to change 2 level 4 monsters to 2 or more level 4 monsters?

--Shinkirou 15:55, October 16, 2011 (UTC)