I have already made changes to my 2615 that I would have liked to see from the factory.
1) Reinforced top edge of bucket and added grab hooks.
2) Added a cab with heater.
3) Added a lower hose heater.
4) Installed a suspension seat.
5) Added extra lighting front and rear. Plus a flashing strobe.
6) Increased bucket lift capacity by a few hundred pounds.
7) Installed a larger tool box.
I am happy with the way my tractor has performed. It has done everything I ask of it. If I bought another tractor it would have all of these items plus a front quick attach setup and more horsepower.