Average block reward over the past 24 hours is only ~453k, I believe this is because middlecoin switches block to block and only mines the higher reward blocks, but I could be wrong.
I haven't read into DOGE that much, so maybe someone can just clarify this. The block reward is random, but is the block reward set at the time the block is found (so "truly random") or is it possible to
predict the block reward? (Only then it middlecoin could do what you suggested.)
It's not necessary to predict.. It's available for anyone to see. The reward for the current block is generated when the previous block was found. It's available by getting the 'coinbasevalue' from the current block template
i.e.
dogecoind getblocktemplate | grep coinbasevalue
The value is in satoshis.