As I'd previously replied, I strongly feel reducing the mining reward will ultimately kill this coin.  Looking at Coinwarz the last few days, all of the older Scrypt-N coins have seen their hashrates drop.  My guess is that it's a combination of miners pointing their rigs at Caishen or going back to regular Scrypt coins, which have recently become more profitable to mine for whatever reason.

Execoin is just a bit ahead of its time.  We're still in the relative calm before the the Scrypt ASIC storm.  It's somewhat unreasonable to expect this coin to start catching on until ASICs really start out muscling the GPU miners in a major way.

The best thing for Execoin is to continue to promote it as a coin you want to mine and hold for the future.  There's nothing wrong with granting the miners who place their faith in this coin with a large reward.  To paraphrase the airlines, "We know you have a choice of coins to mine and we're glad you chose Execoin."  Plus, coins with large mining rewards seem to be among the most profitable - take Dogecoin as an extreme example.

Reducing the mining reward will likely send Execoin down the same path of another low reward Scrypt-N coin - Rotocoin.  Low hashrate, low exchange volume and a plummeting value...  And that's how a coin dies.