If I had to say, probably my favorite skip to make and see finished. Combined with the fun I had writing the Dissector's dialogue, the decommissioning reports, and the description, this made for a very enjoyable writing experience.
The roots of this SCP's making was right after I made 4529. After I got comments explaining how much people wanted to see more of that narrative-type structure, I was overwhelmed, and felt kind of obligated to make something as ambitious as that. That's where the idea of an alien making YouTube videos and uploading them onto people's computers came from: originally, instead of being a caustic film critic type, it was going to be a mellow, friendly alien who just wanted to be accepted by the human world. However, I couldn't get that right, and I eventually scrapped that draft.
A month or so after that whole debacle, I revisited that idea, now with a little more writing experience under my belt and a will to write for one thing in particular: the Decommissioning Department. I soon found out that this type of story involving the DeD could slot itself neatly into the old alien-uploading-videos concept, and I got writing.
There was one major thing which changed from first draft to published piece: namely, the Dissector's character. Originally, the Dissector was a lot more caustic, leaning far too much into some unlikable, bigoted character traits. However, after the ending took a turn towards getting the reader to sympathize for the anomaly, I decided to not make the Dissector such an unlikable douchebag. In the end, that was probably for the better, as a lot more people empathized with the Dissector than I originally intended.
Anyway, my draft critters were all really helpful in taking a look, critiquing, and encouraging me to publish this, so I will go ahead and list their lovely names here:
Draft Critters: 
Calibold, DrUnoriginal, 
Ihp, 
JakdragonX, 
TSDTom
barredowl
