Making mods will be harder and harder, just because the game developers don't want others to fool around with their work.
It's not like in Minecraft that the full source code will be online..
You can say all you want, but i'm sure it will take a long time before SG will turn into a CS:GO community instead of CSS.
Don't get me wrong, i know that it's not all about CSS, but i don't see an upgrade for Gmod 9 soon ;)
Lovin' in the moonlight :]