Symmetry weld.

IStonia,
Is it possible to weld vertexes wen you flip instance? SO if you flip instance and vertexes from instance and base object lays at the same position they would be welded.
Check this screen:
http://take.ms/f9qFA

It will allow us to use instance instead of symmetry, now I always loose symmetry when made some opperation and have to restore it.
Also it will give us new opportunities when you will make radial array or array.
For example with Radial array we will be able to make car rims and other stuff.

A big +1 for this request.

I can't see any possible way to do this.