Hi, Fred.
It does seem bigger, but not so much so that my wife or twelve-year-old feel they will be intimidated. It is, in fact, only slightly bigger in its footprint and height.
The turning radius is only a couple of inches greater than the 2210. The width of the rear tires with turfs is about 51", 3 inches bigger than my 2210. Sitting on the machine you can sense a little higher vantage point from larger tires, but for all intents and purposes it doesn't "feel" like a very big jump up from the 2210. FWIW, I felt like I was making a pretty big jump in size when I went from my 445 to my 2210.
I don't even have an hour on the clock yet, so I cannot comment on the hydraulics or power issues. A few spins around the drive yesterday alleviated all my fears about losing maneuverability and responsiveness. The engine definately sounds different than the 2210, but it's only had a few revolutions at this point. I can already say that I am going to appreciate the position control on the 3PH, the seat safety bypass for using the rear PTO, and the true CAT 1 hitch. The rear turfs seem very wide and the tread looks like it will be both forgiving on turf and agressive enough for most snow. The 410 loader looks and feels like a heavier loader, albeit with no actual work done to support that statement.
More later, for certain. I intend to report and post plent of pics. I found a woefully limited amount of pics and discussions specific to the 4110 when I was in the decision stage.