in reply to Comments and suggestions on new module
I've noticed in almost every method that you had "if it's GD, do A, if it's Imager, do B, etc.." This screams to me that you need to do some deeper encapsulation.
I would propose that you have Image::Mate::(GD|Imager|Image::Magick) and when new() is called bless your object to the user's preference.
Just my 2 cents.
--
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