Thank you for contacting us!
I get your point and it make sense. The reason why we copy all assemblies is to give the user ability to manage his Telerik references using the Configure wizard. If you don't need some assemblies you can delete them but then you won't be able to add more references using the Configure wizard.
Regarding the localization assemblies we can add an option that controls whether to copy them or not. We will consider such improvement when discussing our future plans.
What gets copied to the bin folder is controlled by Visual Studio. This is just the output of your build.
Please excuse the inconvenience caused. I hope I managed to answer your questions. Should you have any future inquires don't hesitate to contact us again.
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