Sense I love my new m2 so much I got thinking about center channel designs.... If the vertical speaker sounds so much better on and off axis why doesn't Axiom make a vertical array center? I am no speaker designer, but having the tweeter above the mid driver seems to be the way most centers are built. They are usually flanked by a bass driver on either side like this.

I remember reading that the vp150 had side tweeters to help with off axis response but after owning the 150 I can tell you that it didn't work very well.(in my room) Maybe its just A.D.D. but this thought just popped into my mind. Has this been discussed before? Or am I just crazy smile Anyway just some random thoughts.
Here is another center that I thought was a great idea after deciding that a bookshelf speaker is the way to go for a center speaker. The larger box and front firing ports would deepen the low end.