Orks are now a T3 army with the introduction of Dark Eldar now properly into the mix. Orks are only competitive in very specific instances now, as Blood Angels, Tyranids and - now - Dark Eldar can do pretty much everything Orks do, better.
With Dark Eldar now properly in the meta-game, Tau get shafted into T4.
This is not true at all. Every army excpet for Space Wolves and Blood Angels needs to have units that synergise.
"Unless you do [...]" means your army must synergise or be useless. Well done for contradicting yourself.On Boyz: I find that, unless you're running a Green Tide army, Slugga Boyz should always be in a transport. AoBR and two Boyz gives you 23 Shoota Boyz w/Nob and 19 Slugga Boyz w/Nob (perfect size to go in a Battlewagon with an IC).