It looks like SCP-005, my favourite SCP in the mod, probably won't be added to the official game. :(
Oh well, it was very useful for me. But overpowered unless it only appears at the endgame. I had fun using SCP-005 to open doors that are locked with keypad and scanner unit.
I still hope it'll be added because I love SCP-005. If it doesn't appear in its containment chamber and there's a note, it really encourages me to get through the pocket dimension to get the code for the door. And if there's no note, you have to risk getting crystallized by SCP-409. (But it's possible to take the key without being infected)
I still love this mod.