I just noticed this, look at the beginning of the video. That's a BIG nice house. Probably 300k to 500k. Nice neighborhood.
This was the first thing I noticed, actually. It immediately reminded me of the DVD they released at the convention this year - the elder in that lived in a HUGE house.
There's no way that this isn't intentional. Firstly it creates a subliminal message "Do more for the cult and you'll be able to live like this.' There's also the less subtle message for anyone who might be a little disenfranchised with the cult due to lost opportunities - people who are doing cart witnessing day-in and day-out are living in huge houses with 3 car garages. It's not our fault that you don't live like this.
It's a similar strategy to what I think is a very calculated move to have all the GB members wearing an excess of gold rings/watches, etc. They relatively subtly (I know we go to great lengths analyzing it here, but the average JW probably doesn't notices consciously) convey an image of success, wealth and power. Again, the message is "I'm successful because of the cult, you can be too!"