I find it strange that you don't have much bass or imaging. It has to be the acoustics of your room. My friends always comment about the nice bass my maggies put out. The bass that a planar speaker puts out is different than a cone speaker. There is no thump and the bass is tighter and more controlled. Also, the 1.6's only go down to about 40Hz. It can also be the type of music and recordings you are using.

As far as imaging is concerned, I find that in my room that the imaging is superb and the sound stage is huge. My hybrid DAC and my 840c really expanded what was already there. When I auditioned the Marantz SA8001 and 8003 SACDP's in home the imaging and sound stage were worse, so it could also by poor system matching with your gear.

I would still try and fine tune them with small changes in position, even just an inch or 2. I would also consider warmer sounding IC's (which IC's are you using and what speaker wire, I use 10g wire and found it made a small but noticeable improvement in sound from 16g wire. I just recently switched out a pair of Monster m1000i IC's for a pair of Bluejean IC's. While the sound is a bit more detailed, I lost some warmth and bass). I would still consider a tube buffer which will warm up the sound and help tame that Emotiva amp. I don't have first hand experience with that amp but from what I have read about it says it leans on the bright side and lacks a little low end punch. I can tell you that when I was using my 226wpc Adcom AVR to drive the Maggies the sound was good. When I went to my Parasound Halo A21, the sound was transformed and really came alive. Adding the Van Alstine Hybrid Tube preamp and Hybrid DAC really transformed it into an audiophile system.