I want a Book of Interesting Encounters.
So, I want them to support the Three Pillars. I want traps and hazards for exploration. I want organizations and beasts and neutral parties "good guys" for interaction. I want horrible monsters and implacable villains combat. Weather effects. Lairs. Terrain.
I want "creatures" that fill these roles, too. Like, how ear seekers and rust monsters are essentially traps and hazards.
I want them to be described so that I know how to run an encounter with them, whichever of the three pillars I use (so I know that rust monsters are mostly exploration challenges -- what happens if the PC's decide to kill it, or if they decide to try and domesticate it?; or orcs -- fight 'em, deal with 'em, and raid their camp, I need to know how to do all of that). I want plot threads, dangling hooks, and possible unique twists. I want allied creatures (do goblins domesticate wolves? do orcs hang out with giants?).
I want stats that can answer me three basic questions: what can this thing do if it is an adversary? what can this thing do if it is an ally? what does this thing do when the PC's aren't around?
I like the aspect of 4e making monster generation easy peasy, and making variants something very simple to do. I like the 2e aspect of extensive lore for each critter. I like the 3e aspect of critters for all the different pillars. I like the 1e aspect of weird critters.
I don't just want a directory of stats (this is why the internet has Search). Every entry needs to inspire me to use it, and give me what I need to use it. I need a Book of Interesting Encounters, not just an Encyclopedia of Things to Kill for XP.