More robust utility of the USB port on the door {UD1:} would be nice. The port seems very sensitive to the capacity of the USB drive and even its brand name. Sandisk is good, but so are many other brands, and drives with a capacity of only 2 GB are getting hard to find.
But... you don't need 2GB USB sticks anymore. That is a limitation only on early R30iA robots. I use my Kingston 8 Gb easily for those as well, it just takes a while for it to be read. Everything after R30iB works with whatever USB stick you want to use.