In the last 2 days the server funds reached a steady state over 300 BTC.

Time to increase the reward per share? I have a proposal:

 * If after a solved block funds are over 250 BTC, reward increases 5% for the next block
 * If after a solved block funds are below 100 BTC, reward decreases 5% for the next block

It's a way to smoothly impact the luck of the pool onto the miners.