The radius would be equal to the radius of a ward so that no part of a ward could tough the inside of a bomb planting area. This would make it impossible for someone to be killed by a ward while defusing. Note that nades from hell hunter would not be included. This is only for the 2 types of wards we currently have.
Solid idea, I like it. It's much better than having to warn people for "accidentally" warding the objective over and over..or worse..having to use admin powers on them.
If you were a beautiful sound in the echos all around, I'd be your harmony.