Those screenshots look quite good. The GOUT video is kind of a mess, even on a 4:3 screen if you look closely, and upconverted looks even worse usually. Frankly I'm amazed to see it at that resolution without jaggies everywhere--gives me hope, it does.
Since I haven't got an HD screen yet, I've only done 4:3 versions so far. I used a simplified version of the g-force script, taking out everything except the subtitles, the anti-aliasing, and the gamma/saturation stages, and encoding to single layer, since the rest of it isn't as noticeable on a 24-inch crt. When I finally do get a big screen, I'll re-do them as double layer using the full script. Probably stick with 16:9 dvd format, since I'm on a Mac and I don't know if there are any AviSynth-compatible h264 encoders that would work in WINE--I'm just lucky that HCEncoder works as well as it does. Hopefully I'll be able to snag the Oppo BD-983 Bluray player; that beast's upconversion is second to none.
As far as audio sources go, I would recommend getting rid of all the tracks that came on the GOUT. Empire's GOUT audio has significant dynamic range compression compared to the laserdisc version, for some reason (though the other two apparently don't). They are all dialnorm'd about four decibels, as well, plus the low bitrate--better to scrap them and use the laserdisc sound instead. Not sure how many you can fit or what kind of bitrates you need for 1080p, but I would use the 5.1 track, along with the original mono and stereo for the first film, and the 93 stereo if you have enough space. The GOUT menus are pretty cool but changing them is probably more trouble than it's worth. It's nice to be able to put the disc in and have it start playing right away, and just switch the audio with the remote if you want, and not bother with a menu at all.