Hi, I have made some changes to MCP http://mcp.ocean-labs.de/
If you apply my changes, what you can do is:
- Make a mods/YOURNAME folder and place any new Java files or PNG sprites and they will automatically work in Minecraft
- Enable/Disable these folders
In the config, the mod called "kennydude" is switched on.
There is probably a lot to be changed (for example, I pulled in JSON parsing which may not be what you want).