Manikus works very hard on many aspects of DC, including the engine itself - it is amazing that he manages to produce any mods at all. In comparison, I've never even released a demo mod... Gotta respect the guy!
I just draw pictures for the most part, but I can say that just working on one thing can feel like monotony, while working on a bunch of things (or not) as you get excited about them feels a lot better. For example, I drew my first of 10 (chromatic and metallic) dragon icons maybe in 2008 or 2009... finally finished the last of them in 2013 or so. It took a long time, but it was fun, and I drew a lot of other stuff in the meantime, too! (Got all the basic 6 giants, etc.) The good thing is that some kind of work is constantly being worked on, because it's fun.
But anyway, I think it is good times now for DC, since 1.0+ has been released! So, it's good that you are interested in the mods, I'm sure that more are on the way!