Which product design change did major music labels widely adopt in response to streaming platform algorithms?

The music industry has undergone dramatic transformations with the rise of streaming platforms. While these changes are obvious in how we consume music, they've also radically altered how artists approach album creation and marketing. This trivia question explores one of the less-discussed but significant shifts in product design strategy that emerged directly from streaming's influence on the industry.

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Frontloading albums with the most energetic tracks to boost algorithmic 'stickiness'
Increasing average album length to 18+ tracks to maximize streaming revenue
Eliminating instrumental interludes to prevent skips that harm algorithmic rankings
Releasing singles exclusively for 60 days before full albums to train recommendation engines