On Opticollide...
Catchy arrangement. One of the most unique grooves I have heard.
It is like ELO's Jeff Lynne fronting Rush. Anyway...
I think the vox could come up and be fattened up a bit in the first section. I love the 'ooh's', nice touch.
I would also bring the guitars up a bit, or the synth down a bit. The guitar is sweet, it should not get lost at all in the keyboard pad underneath.
right before the 1:49 transition, I would love to hear the pad build some tension just before yoiu kick it into high gear.
At the 3:12 moogathon, I would swim the synth all around the soundscape. Do some wild panning. It would fit nicely. Maybe even swim around three versions of the same synth riff. A low sub, the one you have, and a high one. You could make a real funky vortex with it.
Well, there you go.
I love the ending too.