aside from the fanatic issue, the current goblin army list is missing units that can clear dense terrain, apart from trolls which are almost impossible to command, there is nothing hard hitting that can enter woods, ruins marshy ground etc,
one possible fix would be to include goblin spider riders from savage orc list and giant spiders, goblin guard from BOFA, these would make the list a bit more balanced and allow the army to actually attack rather than just use artillery and wait to be attacked.
any input eagerly awaited?