Yep, I know what you mean, warlok. It's something I've been thinking about. I'm thinking of rebuilding it with half-blocks, although it would take a lot of time doing that, so maybe someone can help me to get it done quicker.
Hah yeah, Cutter. I just ran with it!
No sign of any performance issues either. The texturepack in question is Area 19:
As for the lightning, it's what I posted a few posts ago:
Lightning is a lethal element to the storm. It strikes randomly across the map, creating brief fires. While most are put out almost immediately by the rain, it will once in awhile ignite wood and other flammable blocks successfully.
So, yeah, makes me nervous everytime it rains.