Also, just curious, how popular is the multiplayer turning out to be? Do you guys think it has staying power?
Hi Old One Eye, Old Dead Gazerbeam here. That eye problem you have is going to make playing Multi-Player tough. There are some skins that you can equip so that you are almost completely hidden. The skin blends in to certain maps and you can't see the attacker at all. If that doesn't change soon T2 Multi-Player will lose a lot of people. The only saving grace is that the player name is hardcoded in above the head in large enuff letters that you know someone is there. That's my biggest "gripe" about MP currently.
It also needs other fixins too I'm afraid. So right out of the box I'm sure a lot of people will pass on multiplayer. But there is a few die hard players from the old PC version of the game that will play this for years to come I'm sure. It's very Quake II type gameplay. It is my opinion that the base code for this game was written by Carmack and licensed to whoever, the same way Valve bought a license from him and created Half-life. Seems like my note is pertaining to history waxing/waning nostalgically about the days before the Supers died.

Based upon that observation, I think it has staying power. Once someone puts together a dedicated server mod. I think that's why it's not on GoG yet. Right now you need Steam to 'authenticate' the server, but all the server commands (from Quake series) are in the console. There will be a server setup mod or support or something soon.
let's kick some 12 year old arse! gg - Gazer
just for fun -
http://www.mapcore.org/articles/general/the-influence-of-quake-is-still-felt-today-r82/