Use declaration outside of namespace

Heya, 

I always found it very ugly that it is possible to define a use outside of a namespace. Consider the following:

use foo\Bar;
namespace test;
new Bar(); //error, test\Barnot found

I do not see why we should actually support this behaviour in the specification of PHP. I do not see it as a bug in the
current PHP implementation but I think we should consider to remove it in PHP 7. Although, it is not a bug, the use
declaration is simply ignored as far as I can tell, but I suppose it confuses the user. Nevertheless, even if we declare
it as a "feature" I think it should not be a "feature" of the specification.

Thoughts?

Cheers,
Robert