The seat and mower lift are two of the complaints I have on my JD 2305. I have on occasion hauled my Kubota to our other farm where we have the 2305 so I won't have to use it.
That goes both ways. My nephew came over and used my Deere after using his friends Kubota. He said the Deere was tighter, easier to use and a much better overall tractor.
Personally I prefer the Deere HST and reverse set up much more than the Kubota and I think the fit and finish is better too.