You're making a rather healthy leap there -- in fact there is really no particular reason that we will remain a top passing team anymore -- all those players are gone now, as is the coach and system which nurtured them. For all the similarity we have to the golden era Kings we might as well be the Jazz or Grizzlies. Everything's changed.
To use the overused example, Ben Wallace is about 6'8". Peja Stojakovic is 6'9". Who plays taller? Admundson blocked 1.3 shots a game last year in college. That translates to a lot fewer when you hit the pros -- he's not going to be a significant factor in there. Williams though blocked something like 5.4 a game, which is just a remarkable number. Skinny, smallish, + we'll have to see how it plays out, but the possible comparison might be Theo Ratliff. Neither guy has the size you want in an NBA PF, but one guy plays the game very much with a center's goalie mentality.