Try this : http://www.creativecrash.com/maya/downloads/scripts-plugins/texturing/c/uvdeluxe The edge straightening tools will help you grid UVs. There's a bunch of other handy stuff too.
Justin's recommendation, the UV straightener script is practically a one click solution. Works much better than rectify. I tried using rectify, but I never got it to actually do a single thing, it wouldn't even move a vert. Maybe I am using it wrong?
I actually figured out that if you just go to the vertex sub-object mode of the spline, click refine and add a vert in the corners it removes the tension almost completely with very little effort. Then you can weld or break the uv of the edge. But I am still looking for ways to make the lofts that were used in the DVD with…
DEElekgolo, thats exactly what I was doing! GET OUT OF MY HEAD. :-) That looks like it could have been made by Bungie, reminds me of ODST. like half of their textures are just fancilly unwrapped trim. I think the main parts like the skybox and terrain still need to be sealed air tight but things like instanced geo can…