Meticulously (well-) designed expert pack

This stands out as one of my favorite modpacks. Here are three reasons why:

1. Well-thought in terms of game design. The pack's author Sainagh puts thought and effort into designing a modpack that provides for different types of players from very hardcore automation enthusiasts to more casual pack players like myself who enjoy a sandboxy experience.
2. Choice between sandbox gameplay (ch. 1-3) and more gated exploration and automation focused gameplay (ch 4-10). I have played the first few chapters of this modpack several times and I find them to be incredibly fun. I can create as many interesting builds as I want and small automated systems until I get exhausted or otherwise arrive at a nice stopping point. I know there is an abundance of content ahead of me should I desire to continue.
3. Extensive customization. The pack is tweaked to remove pointless items and very structured in the sense that the author's questbook gives tier lists for solutions to engineering problems. There is not "one right way" to solve Meatballcraft automation challenges. The modpack encourages experimentation.