So I was looking and didn't see a JLA thread, they're a great team which can be built around an awesome mechanic of VS Systems newest expansion.

Afew days after their release I played with a Ally deck against Injustic Gang and Avengers Reservist.
While they were whitewashed by the Injustic Gang, Ally won against the Avengers Reservist build.
Batman at 6 drop was the man, stopping a Call down the Lightning and stunning their 6 drop.

While playing I also found this combo.
Turn 3 Hawkgirl, Turn 4 Hawkman w/ Nth Metal, Turn 5 anydrop. Attack up the curve with Hawkman into their 5 drop, becoming powered up, activate both Hawkman and Hawkgirls Ally abilities, giving Hawkman +2 more for attacking up the curve and searching for a copy of Hawkman. Power up Hawkman with the copy you searched for, repeating this to add up to a 20/12. With Connor Hawke out, (jeez, these Hawk/Hawke characters pwn), it's a 24/12 against a 9/9ish.

Yowza.

I'll post my current decklist soon, so what're your JLA strategies etc.?

There's already another JLA thread. It's called Magnificent Seven. it's also in here somewhere.