Heh. We're on top of a hill with good sightlines so definitely a possibility. But as per previous post, I presume a motorised dish can only look at one satellite at a time? Or is that what the LNB does?
The motorised dish looks at one position at a time, but if you point it at at a cluster like 28.2
oE, it can see about half a dozen satellites, which share close enough location that one position will cover all of them. The LNB does the initial downconversion to a frequency that can be sent through simple coax, and for fully independent use you need a proper twin output or quad. That means that each output can be on a completely different band or polarisation from the others, and can look at any of the signals visible from that dish position.
Our kit is ground mounted. The upper dish is the 1m steerable, and we have a fixed 90cm for the Astra stuff. The skybox is on the fixed dish, which will also do for freesat when I get around to it. The steerable covers everything else, and has its own decoder (an Echostar) which also contains the positioner, and drives the dish. Once it's set up (a pain) you can select by satellite and run through the channels in turn, or use the favourites system to recall position + channel on one button. This is about 10 years old now, and I'm sure the new kit is probably better integrated. For that size of dish, you need a fairly serious support - our is a four-inch diameter steel pipe in concrete - because a 1m dish makes a sizeable sail.
If you just want Sky + Freesat, then you don't need all the kit. If you want Sky + Freesat + Europe, then a two dish system serves pretty well. You could keep your current setup with the added Freesat, and do a second setup with the steerable dish, just for Europe. Of course, there's a certain amount of wiring and money involved...