Just as a thought, would moving UC any further back not mean that you'd get Y passengers trapsing through during boarding? I seem to recall that the UC aisle is narrower than in the other classes, would loading from Door 2 and having 200+ people walking through a rearwardly extended UC not be asking for trouble? It seems to me that keeping UC forward of 2 and upstairs is more sensible from an operation standpoint...?
Having people walking through UC to reach other areas is a very bad idea[V] People bash the suites as it is, so adding an extra 200+ people to the mixture would not be helpful indeed.
TBH, I don't really like this new config at all. Firstly, it dilutes the product of both classes as James (I think[:I]) said. Secondly, one has even less chance of securing a treatment on board in UC.
BTW, you need to have seats in a certain class on both decks to allow for wheelchair access.
VS.