1) That looks terrific. I've looked at the way moorish/arab architects would cover the inside of domes with those zillions of tiny nerny arches and thought "definitely shouldn't do that one in quake." so, hey, awesome.
2)
mas inspirato (I may have posted this before)
3) idgamma was a hack to fix the fact that the original glquake didn't do 2x overbright lighting the way software did. this is why everyone whined the game was so dark in GL - it literally was. since the palette couldn't be 2x overbrightened to compensate (because 255 doesn't go any higher :p) it just brought up the midrange and maxed out all the colors it could, which meant the game was still basically just as dark but also looked shittier. metlslime fixed this in fitzquake's lighting (at my request)
ten years ago. if you're still using an idgamma-ruined palette you are an insane person who is insane lunaran out