Most of it is indeed already in the game. The post match screen shows a lot of information, like build order, steam profiles etc. It even shows additional information which are not displayed by this replay analyzer, like resource graphcs, damage, etc.
I don't understand why people are always negative towards the developers. They're working realy hard and they even communicate a LOT with community members who are trying to create something complementary, like this replay analyzer.
A team has limited resources, you can't do everything. You have to set priorities and do one thing after another.
Because the general public has zero understanding of video game development.