Bastion

Seconded, especially the earlier versions.

I've never been a big fan of the E-wing but your takes on it look much better than the official Lego equivalent in Jek-14's Stealth Starfighter, and not just because of color scheme. And I think your original alternate takes on it are even more interesting than the more on-model version. deraven and JekPorkchops' suggestions of a prototype or Resistance-era improved version of the E-wing sound really appropriate, as it's obviously similar but also with its own unique differences.