I've seen this feedback on social media too and I 100% agree with it!

SE also has a history of forgetting to test their gear sets on dark skinned characters, they've had to fix the 2B set, some YoRHa alliance raid sets, and recently Gaia's set because it's only after release that players and the dev team found out that it didn't display properly on dark skin... so it would be good to show what the tests look like with various skin tones, both to reassure the players but also to prevent themselves from having to deal with a HUGE oversight later, if they haven't learned from their past mistakes yet.