Yeah hearts are hard to come by so if I hadn't unlocked all of those chests already, I'd be doing mercies and then brutalities every chance I'd get.These complaints, about doing Fatalities during online play, are a bit exteme, from my perspective. They give heart currency, so why would I ever give that up, even if I am playing someone online? If I play 20 matches in a night, that's a bit of currency I can make for each Fatality.
Taking Pro Tournament rules and applying them to Kasual/Ranked online matches is a bit of a reach.