B4: The Lost City is a classic module for D&D. At one point it (in)famously stops giving full description of the rooms but instead lists monsters in each area and tells the DM to figure out why they're here themselves. Once the reprint will show up in new anthology, I'm sure people who complain online whenever WotC uses "ruling not rules" or "DM decides" or "these parts were left for the DM to fill in" in their design (and then continues buying WotC books to keep bitching and doesn't touch 3rd party or other games for some reason) is going to be normal about it. /s
I think it's mostly cowardice, personally. People don't want to risk putting their own choices into a game based entirely on choices, just in case they aren't as good. It's better to use someone else's decisions than risk your own pride.
Then you have ignorance. A lot of people don't know how to fill the gaps, and WotC has never bothered teaching them how. Any rules they did get are rules of thumb and aren't something to use without thought (like CR), so people complain for reason 1 again.
It's work and effort. D&D seems to have evolved from a game of random tables and strategy that required constant improvisation from the DM, to a game of (open ended) story telling. Character death seems to be less of an option.
So now DMs think they need to build a complex story, while allowing players to make choices. They need to prepare challenging encounters that aren't too challenging. And D&D combat tends to repetition, so they need to find ways to spice it up.
The handful of WotC modules that I've seen don't support that. The module has a single path and a bunch of dull combat encounters.
This. I'm reading the Cyberpunk RED sourcebook now. I really appreciate the GM hints and suggestions. I don't remember anything like that in the 5e DMG.
Worse, some rules/features are holdovers from previous versions that don't make sense in the current game.
And combat encounter building is a core pillar of the game. It should not be a loosey goosey "rule of thumb". If anything, it should be the most reliable set of instructions in the book.
But some monsters are strong against certain builds and weak against others. Some monsters are stronger in certain environment and entirely nullified by others. Some monsters are stronger given certain allies and weaker when alone.
If you could devise a system to assign monster complexity based on every scenario you can imagine that monster being part of, then either that's an astonishingly small number of scenarios or an absurdly complex calculation to force on anyone.
They could make a program where you give it the players' character sheets and the encounter and it simulates a bunch of battles to see how they do. But failing that, you could make CR be a good average, where you could just look at that and adjust based on what the strengths and weaknesses are. I haven't actually played 5e so I don't know this from personal experience, but my impression is that they haven't done that. Some creatures just don't have a CR that matches them in general.
There's also no system for figuring out the CR of an encounter with an arbitrary set of monsters and enemies with class levels.
Bullshit man. Pathfinder 2e had incredibly tight math behind it's design and very simple ways for dms to use it, dnd could easily do the same. Especially since dnd's direction seems to be about giving as little mechanical choice to the players as possible.
That sounds like a party composition problem, then. Don't everyone play ice mages and then walk into a volcano.
Sounds like monster creation rules need to be figured out before publishing the books, then.
Again, monster creation rules should be reliable. And they shouldn't include context buffs that absolutely wreck the power curve.
For me, it's not about risking my pride, it's risking running a shitty game.
I'm not a good DM. I'm not creative, I don't know how to balance shit, and I don't have time to craft any sort of compelling story.
I'm only doing it so that our forever DM can have an opportunity to play the game. So if I drop 40 bucks on a module, I sure as shit want it to hold my hand through it so that I don't ruin it.
I wasn't a good DM either. But then I learned. I threw encounters at the players I thought might be fun, and I missed the mark almost every single time. But my players had fun, so I don't see the problem in getting those encounters wrong. And every failure taught me so much more than every success.
If you fail, but you keep it fun and learn for the future, what have you lost? Only your pride.