Sounds pretty cool. Bump?

So it would basically create a wire when sparked and the wire would slowly fade over time? I can see uses for it if things could go through the wire like it wasnt there. I also think that the life of the wire should have to be adjusted as well though because some people would want it to only work for a split second.

I like this.

??? ???????? ???!

The life should probably be in increments of 50. and you are right, 300 should be close to the max. The main thing that should be in there though is the way things would still be able to go through it while there. It would be like the yellow conductor wall in that way but very temporary. Personally, I think the color should be similar to the yellow conductor wall. Perhaps a little darker like #C9C732. As for being able to make the temporary wire, I think that there should be a way to use already implemented elements like using ARAY and MERC since it doesn't interact with it. I hope this gets implemented because it would be very useful.