Khia was a great addition to So excited. It’s not like she didn’t add anything at all; she had fun parts.
Justin wrote Rehab and had additional vocals so he can claim the feature. The DJ’s or producers have every right to claim themselves on the title as features or the main artist as well.
Let’s not act like Jay-Z’s name alone didn’t contribute Umbrella’s success even though it could have done just the same if he wasn’t on it.
Nayer and Lauren made GMET / PRA more enjoyable and listenable despite them being faceless. But anyone could have replaced them so I'm on the fence with that.
Colby’s part was perfect to me. Gaga was just as irrelevant as him (at the time) so don’t even come for him just because she’s huge now.
Ciara was a great addition to Lose Control; you could practically say it’s her own damn song since she has a chorus, verse, and hook. Plus Ci and Missy make magic together.
Janelle and Christina’s parts are a tossup because some think their parts touch them the most while some don’t even notice them.