Finally built some shelves for my speakers that got them away from the wall by a foot. They were attached directly to the wall before. They sounded good even when directly on wall but even better now that they are pulled out a foot. They are omnidirectional speakers so pulling them out gave them even more of a presence then before. They had a good presence to them before but now it is truly fantastic

. Now to replace the Center with Mirage.
Its amazing how much a little tweak like that can help. Costs nothing, or next to nothing to do.
I have a request to ask of you. Try pulling them out further, even if just on temporary stands, and tell me what you think. Try 3ft. Try 4ft.
Then, I would also consider acoustic panels directly behind the omnipolars. I would imagine that if this type of setup is anything like with my dipoles, ridding that direct reflection will reduce comb filtering and make your audio sound a lot more clear and tight.
Well, that's what happened with me.