Your pack uses an old version of Procrastinatus (1.35vs1.39) it has the old models and a bad translation, plus, the sandbox character selector is bugged.
I you go to the Procrastinatus mod page, we uploaded a more up-to-date version (on the latest pages) it just doesn't include the NPC+ mod.
Yeah I watch that thread too, currently finishing that version

Though to be honest, I don't mind the older style, I liked it, and I also like the new ones.
Also, I didn't notice any significant difference in the translation (both versions had plenty of bad English but were acceptable overall), and I didn't notice a bug with the sandbox but I'll take your word for it.
On the other hand, I'm really digging the extra characters on the new versions. especially eggplant girl, lol.
EDIT: After playing that new version, I noticed a lot of the CGs are still censored (late game content), unlike in the version I shared, so I made my own version where I replaced the censored CGs on the new version with those I had in my shared version.