You're absolutely wrong.
Every member of Slayer has always, and will always, be as important as any other.
Dave is by far one of, if not THE best, drummer in Thrash, and probably in metal, period.
Jeff was always just as important as Kerry onstage, the fans know that. He just didn't deal with much media.
If anything, Tom is the lowest profile guy, and he's THE FACE of the band.
Kerry is the media figure, but to the fans, they know what Slayer really is.
Like I said, both of them have influenced _me_ more than the other two. Way more. In fact, I do weird rhythmical stuff centered around devils note riffs. That's my whole thing.
But it doesn't change the fact that "the dude who sings" and the "guy guy with the tattooed head" are the two who needs to be there in order for it to be called Slayer - in most peoples eyes. I mean, this very article says that their old drummer rejoined them and Lombardo wasn't even around when I was a kid - so his absence is actually kind of a moot point.
I'm a fan, but it doesn't change the fact that this is the only thing that could've happened to Slayer and still have them going. If Tom Passed away and Kerry got kicked out - there'd be no Slayer. In addition to that, I saw them quite a bit around the tail end of Jeff being in the band and they were quite rubbish every single time. I read a lot and heard a lot about "the end of Slayer" even when both of them were still in the band.