Heroes of the Storm has been out for 4 months.
Already has a near flawless replay system.
Already has a near flawless replay system.
It's worth pointing out that Blizzard isn't new to replay systems. StarCraft 1 had one, so they've got at least 17 years of experience on the subject. In contrast, Riot Games is 9 years old.
Riots client is built on, Adobe Air if I remember right. Something not intentionally built for replays and such. Already stressing what they're doing. J/s