I honestly can’t tell if you’re being serious with that reply. How easy do you want it? Each player in game has a report menu above their hero name? You should already be opening the tab screen to check on the talents of your enemy and allies, it’s hardly a difficult step to report someone and as Dr.Super said, people often report for trivial reasons, there is no need to make it easier.
Like you, I very much dislike people who AFK on purpose and I wish that aside from reports they used AI to detect and flag for review those players who do so on a regular basis. Also, they do suspend players, but you don’t always receive any notification that action was taken.