I've been waiting for a mod where it fixes the skyboxes of M2 and Infinity for so long and we finally have it. I can finally use those fullscreen HUDs without my immersion being broken now.
This is just the raw MML from M2 Pepperscapes by W'rkncacnter (not the uploader of this), without any of its actual landscapes. What it does is stretch landscapes across the entire screen, thus preventing any repetition/cut-off points. It looks a little goofy, but for high-FOV users, it may be preferable to the standard, small landscape size. It will work with Marathon 2, Infinity, and regular scenario landscapes (e.g. Phoenix's original landscapes). It will NOT affect modern HD landscapes, such as Phoenix's built-in HD landscapes plugin or Rubicon X's.