So as of right now, both the cardboard and acrylic third party templates are legal to use for play. This makes sense, seeing as the core set only comes with the cardboard ones.
However, it's been proven that the cardboard warps over time. Shouldn't there be a better standard when it comes to competitive play, such as Regionals and Nationals and such?
Maybe the warping of the cardboard is small enough to be a non-issue. What do you think?