Interesting John,
I have a couple of corrections that I would like to make to your theory, however.
The King coal Mine and the coal dock existed synonymously. Also, records kept by the B&B foreman stated that the wooden stalls in the Como Roundhouse came from the Engine house at Platte Canyon (Waterton) and the first Engine House at Dickey.
I won't argue about the homes from the King Coal mine being moved into Como, but I don't think that it was the Railroad that moved them in. I think that it was Railroad workers who were looking for inexpensive housing. There is evidence of the pre-fab homes all through the Colorado mining areas. There are many vacant lots in Central City, Colorado that were vacated by various Cornish Miners when the moved on to more lucrative diggings.
There is also recorded evidence that the depot at Alpine (Fisher) was moved through the Alpine Tunnel to become the Pump House at Castleton.
If you look at the timetables, you will see water tanks moved, almost at a whim, to various locations.
Yours is an interesting theory, the move would have had to happen in the year or so that Jay Gould controlled the D&RG. Nothing is mentioned in the UP annual report for that year other than the D&RG map being included as part of the UP system. But the nuts and bolts stuff never is mentioned in an Annual Report.
I can find no mention of the addition to the Como Depot or where it came from in my B&B books, but it may have predated these two men's service time with the Railroad.
The description of the Residences (called Tenements) in King is quite interesting, though.
Rick