I have to disagree on a few points, dn. When I'm mowing my 1 acre, I have a lot of obstacles and bumpy terrain that require me to change my speed frequently. Doing so with the foot is much easier because it lets me keep both hands on the wheel as I'm being bumped around, or tracking really close to objects.
Not sure why you think brakes are any different now. I only use mine when I want to get off the tractor and keep it running (safety switch requirement). I've never had to use the brakes when mowing, plowing, towing, stopping, whatever.
And there's no way I could plow my driveway with a hand throttle. I have a gravel driveway that requires me to adjust the height of the blade constantly, as well as adjust my speed to keep traction. Can't do all that and steer at the same time without a foot throttle.
Compared to my 1250, everything is easier with the 2544. Perhaps if I had smooth, open lawn to mow and a paved driveway I'd think differently. But as it is, with obstacles and bumpy lawn there's no comparison.
This disagreement, btw, is a great example of why there are so many brands, configurations, and options available. There is no single right way to configure a tractor for everyone.