Here is the list I've played in two NE GTs this year. Went 3-2 in the first as I was still learning, then 4-0-1 and a 2nd overall at Unplugged GT. A clubmate and I created the list and both have been playing with some success. Let me know if you have any questions, I'd be happy to talk shop. I feel ETC is a little "light" on the light council, compwise. I think it's an excellent choice. Here's our list:
Arch Lector, altar, dragonhelm, talisman of preservation, HA, shield, terror horn (this is for arcane unforging protection really)
Lvl 4 Light, power stone
Lvl 1 Light, dispel scroll
Lvl 1 Light, Scroll of shielding
Captain, BSB, GW, Armour of meteoric iron
Capticus, Lance, enchanted shield, dragonbane gem
Captain, horse, ogre blade, charmed shield, luckstone (this guy is an mvp, seriously)
Witch hunter, GW, BoP
11 Inner circle, FC (captain on horse here)
40 Halberdiers, FC (LC, bsb and WH here usually) Detachment 5 archers
Cannon
4 Demigryphs
Steam Tank
I play a pretty cagey game with this list. Game after game, we would add up points and this list just doesn't give up easy points. The Hals usually act as the juicy center of a very tough nut to crack. Six turns of banishments and pressure really works well. Light and altar buffs are amazing when it's combat time, and the continuous threats of banishment ripping up some big baddies is excellent. Power stone is your guaranteed banishment when you need it most. The scroll of shielding in with the WH is basically an extra dispel scroll. Let me know what you think of the list and any questions!