Andrew Karamaoun proposed an idea to discourage selfish mining, which is to allow the block reward get determined by the peak hash rate.

For instance if \(p\) is the peak hash rate for 365 periods or 1 year, made up of 144 blocks, \(h\) the hash rate of the last 144 blocks (1 day period), and \(r\) the base subsidy or reward for mining a block, which is currently 12.5 bitcoin, the maximum block reward can then be calculated using the formula \(0.5r (1 + h/p)\) , the lowest possible block reward being \(0.5r\) . At peak hashrate, the miner gets the full 12.5 BTC reward, otherwise the reward is determined based on the hashrate.