When one of the batsmen is Kallis then you're never going to pick 5 specialist bowlers so it's not as if there was any decision to make.
Granted
.
But the mental attitude changed for our test team in particular, (around the time Smith took over actually). Whereby players where picked for a specific duty i.e. batting, bowling and wicket-keeping. With 6 batsmen, 4 bowlers and a wicketkeeper. Rather than for an all-round ability. You go back 15 years ago players where picked as much for there all-round ability (bits players) as for anything else, looking at guys like Symcox, Boje, Peterson (spin bowler) even Klusener you find teams where we (SA
) worried as much about batting collapses so picked bowlers that could bat as well etc.. Once players of the quality of Kallis (batting perspective), Smith, Amla, AB, Gibbs, and then Steyn, Morkel, Ntini, Philander etc came along the attitude changed to pick specialist players. This is one of the reasons the lower batting order of SA is not the quality it was 10 + years ago, we would rather pick a Rabada and teach him to hold up an end than pick someone like Ryan Maclaren/Wayne Parnell (not that they were not tried but more for ODI). This is also the reason SA have tried AB as wicket keeper and why Duminy (who makes the team on batting merit) is so pivotal to the team and Quinny is important as the future for SA in helping balance the team; Additionally, this is the reason we've struggled recently to balance the ODI team where you need a 5th bowler.... If you look at the last 5 years of Kallis's career his loss was more in the ODI environment as an all-rounder, and more as a batsmen in the test team.
I personally hope SA sticks to picking specialists for the respective roles and trying to improve their other abilities than picking bit and pieces player, and we stick to the 6 batsmen, 4 quality bowlers, and a wicket-keeper.
I hope that did not ramble to much... its late in the day here at work...