Justin,
many thanks for quick reply, actually, I didn't ask the right question. I am aware of that, what I was looking for is ability to globally edit texture size, lets say I use the same material for different things which need to be on different layers (layers representing different elements of architecture: exterior, interior etc which is how things are grouped as they come from cad drafting, in my case Vectorworks). So far I have been able to sort of globally edit textures by joining the objects and then assigning and defining texture in one edit. The tricky thing is that joining objects or surfaces is not changing layer assignment (which is great), however, joining is not a editable group - its not easy to take out or add elements to a group, as a result when updating a model it takes a lot of work (selecting, deselecting etc) to maintain the ability to edit textures.
