I'd say that Brimstone is possibly what is considered the least necessary armour, but maybe you might go perma granite in which case I would still have stone skin, rock armour and minerals, rooted, mudpots and earths embrace. From /elec lightning clap is possibly the least necessary, on my stone I wouldn't entertain it where as I would all other AoEs, may as well hit a many at a time as possible if solo. So really lightning clap and havoc punch I'd consider skipping. I ain't got a Stone/Elec but I do have a Stone/Stone and a Elec/Elec. Teleport, Haste, Weave prior IO sets and perhaps fitness cos ya might want it.
He will honor his words; he will definitely carry out his actions. What he promises he will fulfill. He does not care about his bodily self, putting his life and death aside to come forward for another's troubled besiegement. He does not boast about his ability, or shamelessly extol his own virtues. - Sima Qian.
Lightning Rod + Granite alone makes a great synergistic pairing. It's a teleport into the mob with a damage secondary effect. :-)
Let me never fall into the vulgar mistake of dreaming that I am persecuted whenever I am contradicted.
~Ralph Waldo Emerson
"I was just the one with the most unsolicited sombrero." - Traegus
Thank you, New Dawn & Aett! I had similar thoughts but i really was not sure about Jacob's Ladder.
I am trying to get some basic power ordering figured out. So another question: Would you recommend Crystal Armor & Minerals late in the build or somewhere in the middle? Some say you will not need either until late (some said Minerals until last power choice). I am trying to get tough and weave right after Granite to maximize it's durability. And i am reviewing the list of recommended sets to achieve my other goals.
In the early levels i am finding considerable advantage to my endurance bar. I like it and i think i even have a good look for this armor set. I just want it to play well. 
Thanks again to all who reply!
The word need gets over used. The game has changed since some rules were created by people on what is needed and what isn't and will go on changing. Crystal armour which is an 18 pick comes in handy from 28 at the latest as a rough estimate with the Moonfire TF. Minerals well, Psi is met at 15 but Minerals is a 26 pick, I would get it before 40.
He will honor his words; he will definitely carry out his actions. What he promises he will fulfill. He does not care about his bodily self, putting his life and death aside to come forward for another's troubled besiegement. He does not boast about his ability, or shamelessly extol his own virtues. - Sima Qian.
I was looking to build something different but i still want an effective Tank. My Goals are to softcap at Granite or before and still hopefully overcome -recharge, -damage and -speed to a reasonable degree. I talked to a longtime player and he said all the secondaries worked well with Stone. But my friend told me electric melee had no synergy with stone. I wasn't going to Jacob's Ladder (cone on a stone?) or lightning clap, nor brimstone armor. I am not sure about Crystal Armor or Stone Skin. Teleport and Fighting Pools seem a given from my reading on the forums. Anyone out there who has a Stone/Elec and can give me some advice? Any advice on power choices? And are my goals possible at the same time or do i have to choose between them? If i have to choose what would make for a good tank (primarily teaming). I appreciate your candor and help, this will be my first stone tank.