Give an option to download all the modules in 1 file, make sense because people prefer compact downloads and will use it, also you can bring the adfly back to get a little bit of money from it with 1 download file.

I prefer to have more flexibility in what parts of the mod I want, one thing I think would be useful is an all in one jar.
What would the 4 modules be then? I think the 6 we have now are all separate in what they provide.

As a matter of fact, RedPower had 7 modules

I'd like to have 1 file for all, indeed, good idea there.

And what i was looking for is the old 4 modules of ProjectRed:
ProjectRed-Base
ProjectRed-Integration
ProjectRed-World
ProjectRed-Compat
But all in 1 file is better anyways.

The point here is to be modular. There is no way to merge it to four files. I was thinking about the one file thing but it would definitely cause some confusion and some people will end up installing all the separate ones along with the combined one. Don't think there is a need.