I am developing a mod that makes the game look better in widescreen and fixes some stretching that occurs when playing in widescreen. As well as improving the look of the background starfields drastically and other small HD improvements. Currently it is only for 16:9 resolutions such as 720, 1080p 2560x1440, etc. But I plan to release a 16:10 version as well.
I recommend anyone playing this game in widesceen downloads this mod. As it only seeks to improve the look of the game.
Unfortunately this doesn't fix the briefings but I am looking into how difficult that might be to fix.
You can find the mod on Moddb.com at:
http://www.moddb.com/mods/nexus-jupiter ... /downloadsOr just search ModDB for "Nexus HD widescreen"
The current title of the mod is "Nexus: Jupiter HD Widescreen 16:9 (1080)"