No permanent weather-killer for testing purposes right now. We just need to test rain and sun within the context of the existing CAP metagame and existing weather mechanics. Weather-killing beyond Air Lock and Clear Skies would be a completely new mechanism and would really skew the testing results on Rain and Sun. We may want to explore weather-killing later. But, first things first -- we need some more tangible evidence on the effectiveness of auto-rain and auto-sun.
When you make the testing thread, I will post more details on the programming changes I plan to make. I really want to stop discussing the weather testing effort in this thread, since a topic will be created specifically for it.