I dig Marley (and spent some time in Jamaica last summer buying reggae CDs from the locals), but I have to tell you that to my ears, there's a lot of African influence going on still. Steel Pulse is great in concert, I can tell you that...but so is Femi Kuti, a Nigerian whose father Fela was one of the great voices in the world music movement for many years.
Try some, you might like it, is my advice.
There's also a lot of great Central and South American music that shares some converging influences with reggae...there's a record label called Stonetree in Belize putting out Andy Palacio, Paranda and other amazing stuff.