Lightning spell damage on dark elixir

Currently lots of players use lightning for looting only dark eliksir. That is really annoying when saving for upgrades. Lightning is really simple solution to get dark eliksir when storage is well defended. I have a few ideas how to prevent this or minimize attacks like that:

- lightning spell wouldn't have any effect on dark eliksir storage if the base is not destroyed at least 50%.,
- decrease damage with lightning spell on dark eliksir storage,
- new building like hidden lightning conductor that player can build in order to protect his dark eliksir storage or drill. This "lightning conductor" should completly absorbe spell damage done to the building protected by it.
- when attacked with lightning only to gain dark eliksir, allow revenge even if attacker has shield.

Im a lv103 farming in gold 1 and all i get attacked by are lightning spells and people attacking my town hall (which is outside my base) i only lose 1000 gold, 1000 elixir and 100-600 dark elixir (which isn't that much to me). Its a good way to keep everything balenced loot wise but the people using the lightning spells to get the dark elixir arent accually that smart coz a light spell costs about an average of 30k elixir each and using one of those just to get a little dark elixir isnt that smart. Just spend that lightning spell cost on saving up for a dark drill/upgrade thats one reason why th7 people can get dark drills now :)