This not only allows each piece of content to make an impression, but it also allows them to offer more support to each release with things like additional artwork, effects, and sounds.
To combat this, the development team is planning on spreading out the content, dropping individual pieces at different times. The second - and perhaps more important - issue is that dropping a ton of content at once can cause some instability, disrupting how the game plays. The first issue the Heroes team took note of was that when releasing content in a batch like this, individual pieces failed to stand out. Taking a look at how content releases worked over the past year, wherein they dropped a slew of new content and features at once, the dev team noticed several issues that they wanted to address. In the Heroes of the Storm "What's Next" panel at Blizzcon, the team revealed plans for upcoming content, as well as changes to how that content will be rolled out.