Ok, I’m starting to understand what you mean a little better… Have you seen the ReNoam-tool? If not, could you check the thread out and tell If that is anywhere close to the idea you are describing? I’m just trying to get what you mean a little better.
The tool is a bit bizarre, I never quit got the hang of it, but if I understood what f+d+k did there was a tool with which you can define your song structure by using a free, text based approach. A bit like below (nevermind the syntax, i never understood it… 
)(also nevermind the structure, i’m just whipping something up as I go)
song = A1 B1 A2 B2 C
A1 = verse bridge
B1 = chorus
A2 = verse verse bridge
B2 = chorus chorus
C = bridge end
verse=0,1,2,3
bridge=4,5
chorus=6,7,8,9,6,7,8,10
end=11,12,13,14,verse,15,16
I think the ReNoam tool gets pretty close to what you mean, but I’m not sure.