I don't really understand what you are trying to say, but what about using Stencil Alpha blending mode instead of mattes? Should be easy enough to insert any number of layers/ adjustment layers inbetween without breaking down the actual structure too much. And of course simply consider pre-composing and duplicating your layer in the main comp to apply the Glow...
thanks, i'll give it a try but I was experimenting with Stencil Alpha's before and I found that it blocked out the rest of my composition (i.e other objects and other layers). I found that Luma trank matte masked what needed to be masked but without blocking or masking out the rest of the animation..
I hope that makes sence, kind of hard to explain, but I will try your suggestion out and see what happens...stand by.