Best base license to pick?

[Jason White]

Alex Bligh writes:
 > 
 > (b) Distribution Format
 > 
 > You may not distribute Modifications except under this license. You may not
 > distribute Covered Code to which any Modification has been made (by You or
 > by any Contributor) unless it is a form which includes both the Original
 > Code, and the Modifications in a form that is separate from the Original
 > Code such as patches.

I object to the inclusion of such a clause in a license and
would urge the OSI to modify its rules to  disallow approval of
licenses containing such restrictions.