Use CCLights2 to solve your problems.
The problem with this is that, one way or the other, you'll lose out if you play any multiplayer, either :
1. Your admin bro doesn't want to install the mod because it would be too much trouble for one person out of x (where x is at least 15), so you don't bother doing it yourself
2. You install it in SSP anyways, and proceed to miss it heavily in any server that doesn't have it. (Almost all of them)
Sometime additional mods don't solve the problem. I'm not trying to make CCLights look bad or anything, but more mods in only perfect in few circumstances.
'HD Graphics' terminals would be really nice, because then we could then do more with it, and (hopefully) wouldn't be too hard to implement : most of the code is already there, all that needs to been done is allow a larger range of 'resolutions'. But that'll be the most we get out of Dan or Cloudy. Don't get me wrong, I really like the 1980's microcomputer feel to ComputerCraft, but sometimes 2000's microcomputer would be cool, too. I've had an idea for a while that would essentially be a more complicated ComputerCraft with a tech tree, where in the end, you could get the massive 16-core, 32GB RAM, HD graphics super-beast that would handle all of your Minecraft computing needs until the end of time. Low-tech is cool, but sometimes leaves much to be desired.