Thanks for sealing now you will definitely get that material which will be copyright and all users will download easy templates from internet and will upload here and sealing the contest will help them that no other bodies will see and report one's entry!
It is true my friend
@grafixor: The main idea of sealing the contest is to protect from copycats so that no one will copy or get inspired by other design or by a highest rated entry! Also from using templates as you say, cause till the end it is only in your head what to submit and and if a designer is creative it doesn't matter if it is sealed or not! :)
Plus sealing the contest offer contest holder to get as many unique entries as possible. So, till the end there are more pros rather then cons :) Sealed contests are good!!! :)