Is TWP Dying?
You shouldnt make a mod unless you are changing more than just maps. Also Rope it isnt just source code.
You can't access Portals Source Code.
dvlstx, make it a map pack. Unless it has tons and tons of models, materials, and what not. .
(Don't add stuff so you can make it mod now, lol)
The more you give, the less appreciated it will be received.
yes, but you can release a mappack which is the same as a mod, except the mod has different source code instead of just maps and models and sounds etc
Mod - If you need to change things that can't be done via custom content (anything more in folders other than models, textures and maps).
Yea, good point there. I've got custom materials and sounds, but those are all pak-rat'd in sooooo 
Id say go with a map pack, because making a mod for that would add on useless files and would make the file larger for no reason.
Agreed.
Also, I like how a thread can be started on one thing here and end up on something different...
Thats just the magic of the internet.
MAGIC!!
Well, a mod should replace the name of the thread to "Random Topics" Its these threads that can get a forum active again. (Trust me I know a few forums that did this.)
The more you give, the less appreciated it will be received.
MAGIC MONKEYS!!