I've seen more engines than I can count put on the "platform" and one fact is inescapable:
No matter how long one leaves the drain plug out, the moment the motor hits the table, an oil puddle immediately begins to form. And this is compounded by the fact that the BMW's are shaft driven and final drive lube would have been a factor as well.
Also, their hands are WAY too clean, but I guess that stems from the fact that the motor is also WAY too clean, considering the repair are being done "in the field".
Even when you have a fully equipped shop and pressure washer at your disposal, you never achieve that level of cleanliness.
As much of a stickler as I was that my mechanics make cleanliness a priority in the shop, your boys make mine look like a bunch of pig pens.
Also, where is the toolbox? Or the box to toss the fasteners in? Or the rags to lay the parts out on? And a barrel of mineral spirits at the side of the table for parts washing would be a good idea, as well.
There isn't anything wrong regarding the guy setting the fuel tank back on the frame, that gets done all the time. Also, while smoking around a job in progress isn't the safest thing in the world to do, many a mechanic works away with a cigarette hanging out of their mouths.
The point about the lack of cables and hoses should also be well noted. They would have been routed up out of the way to facilitate easier engine removal and therefore be more visible in the scene.
Sorry to be so critical, but 20+ years in the industry has made me an absolute expert on what a motorcycle maintenance situation looks like close up.
Regards, PWB.