How to reduce the Size of a Mod?

[Cormaeg]

Hmmm...the link is not working for me, but it was a nice idea, Aleric.

Actually, what I'm talking about though is, take for instance Arthurian Total War. I mean (I might be wrong here but to a neophyte it seems like) they've almost changed the entire game. And yet the size of the mod itself is nowhere near as large as all the files I have.

The people who made it obviously knew which files to package and which files not to package. Unless those installers do all that for you?

[Squid]

I guess that the only files you need to package would be those that you have changed or added. For instance if your mod only changes which factions can build epic stone walls then you'd only need to include export_descr_buildings.txt.