I would like to see something similar to the old book of lairs (think thats what they were called, from 1E & 2E) that takes a few pages for say a wilderness encounter, urban encounter, dungeon/underdark encounter, seafaring encounter, etc and gives suggestions on how to scale them and tie them together & make them your own. I dont like or want a 250+ page from level 1-12 linear adventure. This could be a good introductory/tutorial that guides new DMs and players alike on how to make the game their own for their table by using lots of sidebars full of suggestions of tips and tricks throughout the book. I'd just like to see the format of adventures switched up a bit.