Project level indirection

It would be nice if it was possible to set up indirection at the project level.

In my case I only have only three values that I need to reference for indirection: server, device name, channel name.

If I could set up some properties at the project level and then also designate at the project level that:

{1} = server, {2} = device name, and {3} = channel name

Then I could just modify my tag names to use {1}, {2} or {3} and not have to re-add the references in many different places.