Maggies a waste if only 3' from backwall?

All maggie owners, please chime in. I've been considering the maggie 3.6 or 20.1. My basement room is 15x20x7, thin carpet on slab floor, drywall over foundation. It is very unlikely I will be able to have them out farther than 3 feet from backwall, unless i had them on some kind of rolling/sliding platform. I have read repeatedly that maggies must be at least 4-5 feet from backwall. So, is 3 ft just not enough? Will the magic disappear and render them pedestrian?

While I'm at it, one more question: I understand there is a narrow sweetspot for maximum enjoyment, but how bad is out-of-sweetspot/off-axis listening? What aspect of SQ is actually lost? I ask this because I've read several posts where people thought they heard a real drummer or piano in next room only to find it was music played through a maggie (ie, "Best Speakers.." thread).

Thanks much for the replies. I really am considering joining the maggie family, but don't want to make a mistake based on room and one-person sweet spot.

Jeff