Maggies a waste if only 3' from backwall?

I have 1.6QRs in a 14 x 19 x 8 room with plush carpeting over hardwood floors and drywall walls. I've had to deaden the walls behind the speakers, especially the corners, to remediate excessive brightness and address slap echo. My speakers are out 5' from the back wall which is necessary for getting response down to 40hz. I also use Mye stands, which enables me to tilt the speakers forward to allow the tweeters to align in a perpendicular to my ears at my seated height. To me, getting the vertical right is much more important than the lateral sweet spot. Given the difficulty in getting them set up properly in my room, I've decided against going up to the 3.6Rs unless I can arrange an extended audition in my room. I expect the 3.6R's will be an even greater challenge in your case. I would worry that you will find the 3.6's too bright and I'm pretty sure you won't get nearly what they are capable of in the bass. You might have more luck with the 1.6's or new 1.7s. Also, they are not all that heavy even with the Myes so you could move them out for listening and back again I suppose if you placement concern is appearance driven. If you really need to go lower it might be easier to get a sub to work than the larger maggies.

Maybe a few more words will provide some clarification. Maggies are dipoles. It is my understanding that the back firing wave will cancel out the front firing wave on low frequencies if the speakers are set too close to the back wall. While the 20.1s are capable of going down to 25 hz, you won't hear the low frequencies if the back firing wave cancels the front firing wave. I can tell you that at 3 feet out, the 42Hz E on a contrabass is almost inaudible in my room. Moving the speakers out another 2 feet makes a huge improvement. Quality amplification is essential. I use Cary 500MBs with my maggies, and they are wonderful amps but their 1000W into 4 Ohms won't overcome the physics dictated by the set up. I love maggies, and have used them exclusively for the last 20 years. I have not auditioned the 20.1s or 3.6s in my room, so I can't tell you from experience what they would do. I'd buy some 3.6's tomorrow if I could audition them in my room first. But I won't spend that kind of money on an experiment when I'm so satisfied with my current 1.6s. It's your dime. If you are willing to run a 10K plus experiment, I'd suggest hiring a consultant prior to purchase with a follow up to get them set up optimally after they break in.