Anything missing from an TTRPG "library"
TLDR: I've been given the job of managing what is effectively an TTRPG library of 400+ book, including a handful of new purchases every quarter. Its focused mainly on modern TTRPGs, aka stuff still in print. We aren't trying to collect every source book of AD&D from the 80s. There is a second tab at the bottom with some things I think are missing, but I'm curious to hear if people thing there are some glaring holes/niches/etc... that would be represented by something. Please give me your recommendations and WHY!
The current list is viewable here: https://docs.google.com/spreadsheets/d/1eYl5EwLuVSxqdLKO7xVQA-as8ODd_zqO/edit?usp=sharing&ouid=112941337794333508003&rtpof=true&sd=true
Slightly longer (not too much longer) version is I work for a tech/engineering company. The founder has been playing RPGs literally since D&D was invented, and wants to fill several shelves in our on-site library with a massive RPG collection. I've been both playing RPGs with him for several years now, and working for him for a bit longer, and he's asked me to manage it. He went ahead and ordered 400+ books, and then is handing it over to me. In addition to my actual job, I'll be the kind of "curator" for the collection, buying new stuff, keeping it organized, helping other people with recommendations, etc... Also, he's asked me to figure out a way to organize it: I'm thinking roughly by underlying mechanics (D20, PbtA, 2d20, Year Zero/d6 Pool, etc...) and then just group by game/publisher, but I'm open to suggestions lol. Thanks!