Hm. Stalker Anomaly is up there, if it counts. I played the originals to death and Anomaly brought GAMMA eventually, which is probably the most up-to-date and approachable way to play stalker nowadays.

My favourite has to be Vanilla Psycasts Expanded, though, for Rimworld. The vanilla psycasts are very meh, and only the player is able to use them. VPE adds new psycasts and reorganices the ones already available and the new ones into new trees, allows enemies to use those same psycasts, and allows you to set certain psycasts to be used when ready. Makes it a bit less micromanagy, and gives you a chance to give more personality to each of your pawns if you're into that kind of thing.