Here's my take:
I want an H9 to be my jack of all trades pedal. Need a phaser? Check. Need another, auxilary delay or reverb for some weird song? check. Need some pitch/whammy effect? Check.
Why not allow the H9 to be the jack of all trades, fill in the gaps pedal that it is, by giving it more flexible routing, a la the mobius? A pre/post function would be unbelievably useful to a player who wants to use the H9 as the do-everything pedal that it is. I'd by one yesterday if the H9 could do pre/post.