it would be nice if there was an up-to-date version of this, a shame the dude didn't give this to someone else who could've maintained it. because now i'm trying to look up a bunch of things and praying I install things right. The ispuddy one looks nice, but I don't know the best way of going about this.
With Hammer++, the only reason to download this anymore is for the thumbnails on some materials, door and payload track prefabs, props and gamemode libraries.
The material browser thumbnails don't need much updating since 90% of the content that is being added to the game is locked inside of BSP files and not useable. (Literally legally not yours to mess with)
The door and payload track prefabs need no updating.
This leaves as with the prop and gamemode libraries. They definitely need some good updating. Since 2014, tons of props as well as several gamemodes had been added to the game. With hammer++ it's slightly easier to find specific props in the model browser, decreasing the need for an updated prop library. For the gamemodes you can at least find specific prefabs for each one on this site. This is actually a good thing for some of them, like passtime, since the gamemode is so complex that you need a whole forum thread to understand what everything does.
Also, side note, the ABS gametype library has a few bugs in it. Things I can name off the top of my head are: Some controlpoints don't change color on cap. The payload's don't have a functional spinny light and the wheel sparks (when going backwards) are coming from two of the side-wheels of the payload, instead of the two back-wheels.