DragonBox is a kitchen sink modpack with tweaks that encourage creative automation and irregular playstyles. For example, ores are set up so that different ores are best to process using different mods, they generate in huge veins making regular quarries less useful/mining more viable, and you get a much higher yield from ores. Due to changes like this the pack isn't necessarily harder than others, but you can't just build the same stuff you do in any other pack. For the most part the tweaks made to mods are minor so their progression is about the same.
This pack is a work in progress, but as there isn't any late-game cross mod gating that shouldn't be much of a problem if you want to play along as the pack is developed.
If you encounter a problem with the pack, or even just find some part that seems more difficult than it should be, contact me on discord @ Cvoid num 6123.
(for those updating from 0.2.1, you may need to use the helper update in the files here one time for old worlds to load in later versions)