AV - I like it -- A LOT! I do have one suggestions though (actually two...)
First - I know you are trying to stay true to Atolm's design, and I really admire that, however, could you do a version with a smaller nacelle - and mount it on top vs. the bottom. I'm a pilot in real life and I think landing this thing on any planetary surface might be problematic with the nacelle on the bottom. If the landing gear (or anti-grav pads) malfunctioned she'd be hell to land even on a prepared surface. Something would break unless she had tractor beam support from a mothership or ground station -- which could be an issue in combat. If you want I can help with that version. My bashing is getting better.
Second - Asymmetric Atolm mesh in the works? Ya' gotta show us! I think I know the sketch you're talking about but I'm dying to know! With these little babies on board she'd be formidable. Maybe she'd a good entry for the Darker Projects 1701F design contest - retro yet modern and can't beat Atolm's originality. Especially when combined with good modelling and meshing skills like yours.
http://www.dynaverse.net/forum/index.php/topic,163378818.0.htmlMy back is out again and since my physical therapy is done for the day I'm going to the medicine cabinet for some better life through pharmacology....

Nice work and thanks for sharing.