I too was a big fan of Celerity's idea. I also realize the incredible amount of work and testing that would be required to make it happen. I would certainly be willing to help in any such a capacity, but it is a very large endeavor. And FL would certainly become a very different game, which may not be what all those concerned want. Lightning bolt is certainly usable in pk, as your opponent gets low, they are already dirted and you do not want to use an area damage spell due to pulling others into combat. It's damage is not too high to be used all the time, but enough so to make it a very viable option at the end for that extra damage.
lightning bolt
Putting it in would be easy once the coder had a design written out--doesn't need any new skill/affect stuff. It's just the balancing that would be tricky. Benefit > costx100 in my book. It would breathe much needed fresh air into our game.
I should bump it up just to annoy f0xx. 
Or maybe work on a new version of it and repost it, hmm hmm.
Integrated paths (link in other post) and cabal reorganization (link below) are my favorite ideas:
I must say, I've had quite the change of heart involving Celerity's integrated path ideas. I absolutely love them now. 
I want to point out that Cel's cabal reorganization idea is straight up AMAZING! Integrated paths seems a little less... interesting just because you can become something drastically different than your base class dictates in the current game, but maybe that would be good for us. No more X trumps Y just because.
I should bump it up just to annoy f0xx.
To be honest... the more I think about it... the more I start to somewhat like the idea.
It's just an enormous amount of work without any guaranteed result, and most probably we will just end in a situation where people would be picking the same skills...
Boy that's some off topic I did here, I deserve an infraction.
Double save with AFF+Mental would make it a interesting spell. But not Paralyze, just 1 round lag, like some weapons.
Can't laglock, does not stacks, and only useful on heavily low saves PC.
Alternate option would be a AC check of opponent, in order to increase damage, just like call lightning.
allow a small stun every 3 bolts, apply a debuff called "charged" when it is up to three stacks it "grounds out through the victim" causing some extra damage and a small shock that stuns.
Sounds like Kennen from League of Legends
MARKS OF THE STORM FOR EVERYONE!!!!! Hey Karthus, press R!!!
We're taking over... D:
I ate an orange....then I was k.