Join Date: Jan 2009
Location: Worcestershire, UK
Yup, pure goblin armies are very hard to play, very expensive (due to the large numbers of models and the large amounts of metal models you need) and have serious leadership issues... BUT, build them right and have a little luck and they are almost unstoppable.
Where I would consider a lot of pure-gobbo armies have gone wrong is that they get too focussed on fanatics and so never actually take the units that'll really help them out: mangler squigs, squig herds, doom divers, wolf chariots, massed bolt throwers and trolls if your willing to take them.
The big problem with the army is always going to be Ld: being so cheap means you can have huge numbers of units running around the board, but the downside is that they'll be quite close together, quite easy to kill one and then there'll be lots of low-Ld panic checks. This can be countered with good use of goblin warbosses (cheap lords, surprisingly good in combat and Ld8) and a standard of discipline to up your general to Ld9, with a BSB for reroll... but you'll still have issues with small flanking units.