Hi Cory,
Your key won't get banned for making these separate calls, but they are still subject to the 4000 request limit per day, as a free user, and you would run through this much quicker.
One of the reasons the searches are separate is because the format of the responses differ - releases, artists and tracks all have different information that an app requires such as release dates or names. Also, the way an app displays these results differs - you would not need a 'buy' button on an artist.
Regardless, thanks for your feedback and I'll pass it onto the team who handle these endpoints.
Kind regards,
Chris
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