http://www.torhead.com/skill-calc#201ZbsMrdRrcRMZcMcRs0z.3
This is the version of 0/30/16 I'm running in both 4v4 ranked and solo queue. You don't need points in subversion since you never cast lignting strike plus I invested in +100 force instead of chain shock to be able to offheal and bubble everyone, I find that 500 force isn't always enough if the fight comes down to acid and you have to offheal a lot.
Lightning stil has better burst and is probably my favourite spec, but after facing multiple double smash ap pt compositions in 4v4 and having 3 people constantly sitting on me I gave up on it. It's amazing when left freecasting, I managed to kill stuff even with 3 on me but its freaking hard and annoying as hell when enemies rotate interrupts on EVERY. SINGLE. of your casts.
I don't understand people's obsession with madness as it's force management is horrible and if the fight lasts longer than say 3 minutes you have 0 force and well that sucks. What's the point of taking a sorc instead of say a sniper if the sorc can't offheal? I think of sorcs as more of a support class and as madness the main advantage of bringing a sorc to your arena team just vanishes, since half of the time you don't have enough force to even bubble yourself. It's great for killing tanks though, especially PT hybrids.