It seems like it's a toss of the coin that decides whether something is private or protected in GXT now which makes it hard to extend functionality. Sometimes I'll want to override a function and half the time fields/methods used in there are private when I really only want to take out or change one line. Can this be worked on in future versions?
We are rewriting almost everything for GXT and i will keep an eye on making it easily extenable. For now oyu will need to use JSNI to access private members.