Is there ANY alternative universe in which Will Smith or any of his style age gracefully with the music? Not Kid n Play, not Hammer, not Biz..even Slick Rick & Kane were "corny" by mid 90s. And a host of others. He's long lost his ability to write at a high level, and his proper orator voice isn't even the way he naturally speaks, so him trying to rap the same as he did for his soundtrack hits comes off as forced.
Heavy D was the only one that did, and he was no longer a force for his solo albums.