/nopickup was likely removed because its one of those things only some players would know about, and you'd have to go read a webpage to find out about.
The dev team stated early on they did not want people to have to exit the game to learn mechanics on a website. I guess reading is hard.
As Jay Wilson said at Blizzcon, "Any time you have to leave your game is a bad experience.
If you have to Alt+tab to go learn a build, that's a bad experience. If you have to learn something about the game in a way other than playing the game, that's a bad experience."
That's how they roll, my friend.
yea yea... /nopickup as a command was hard to find and is excused for D2 as it was 12 years ago but now don't tell me that adding 1 more option to the gameplay options would be to much for us to handle?