Unless you're using room correction, this almost certainly a bad idea. I'd always place the subs for smoothest bass and the mains for best imaging. If you just make sure that you're crossing low enough from sub to main to eliminate subwoofer directionality, you won't be trading away anything (except appearances) with asymmetrical placement.
Anyone have Bookshelf speakers mounted over top of their subs??
Like the title says, I was wondering if many have done this to get a true stereo sound with dual subs, and bookshelf speakers? My current set up is SVS ultra bookshelves, and 1 SVS sb2000 for now, adding another sub soon. I would like to build speaker stands to where the subs slide under the bookshelf speakers, and I haven't seen it done anywhere, just wondering if it is an idea worth pursuit?