The block reward for Ethereum is 2.91 in WTM. The commonly accepted value is 3, but I can see where 2.91 is from because there's a chance to mine the uncle and get the lowered reward. However, those two things combined undervalues the block reward, no? By all accounts, the inclusion of uncle rewards should NOT be considered a penalty - and the reason this isn't properly accounted for is because the block time with or without uncles is the same. What 2.91 really is is 'what is the average reward given that you mine a block or uncle?'. But that figure can't be simply multiplied into the block time.