So, adds an additional die to electrical damage rolls. So, now electro leaps hit on 3d6, which isn't a bad thing.
I am thinking Lightning shroud on the thunderhead or on the storm wall with 3 focus is the best way to capitalize on this feat. Or possibly on the assault from the storm blades.
As far as electrical damage is concerned I haven't really been able to find much in the Cygnar armory that offers extreme damage.
Possibly the lighting coil could see some serious damage output from the thunderhead. POW 14 on 3d6 isn't bad at all.
At any rate suggestions and combos would be nice to know so, we can all maximize this feat. I would say, at the possibility of being wrong, that this feat is mainly for clearing out large groups of infantry. I haven't really seen any implications where it would be viable against jacks or warcasters. At Lock and Load I used nemo's feat and I used the thunderhead to attack a big pig with the fists and electro lept into the surrounding infantry. All of the infantry died to the feat-ed chain lightning and the electro-leaps from the thunderheads fists after applying lightning shroud.
Possibly applying lightning shroud to a stomclad then using Nemo3's feat to boost all the attacks. Four POW 21 electrical sword attacks. That could be some serious damage.
Those are just a few suggestions. If anyone has anything better please drop it here.