Good post, i have to admit looking at South Africa's side a lot of them are around 25 so i actually think they might still be very strong in the next 4 years, but don't you think there might be room for other sides to sneak up if India and Australia drop off? i seriously think WI will surprise a lot of people in the next 3 years with the talent we've got coming through right now.
This is true - SA does have a young side. It doesn't mean that all the young players will be good, though - at least not simultaneously. Duminy has been woeful, Morkel and co. haven't fully convinced (though they might soon) and de Villiers appears to have plateaued. SA also has problems with quota systems and a lack of FC depth (which is probably part of the reason why they bank on youth). This side might grow with experience, or some may simply find the highest level too daunting. Plus, there are some significant retirements on the horizon and the fact that they always find ways to fall from #1. Anyway, we shall see what happens.
NZ will never be one of the top Test-sides, for fairly obvious reasons (i.e - small population base, rugby union). They have a good lower order, but a shaky top order. Plus, I know little about their attack beyond Martin, Tuffey, Mills and Vettori. Of these, only Martin has consistently been able to get himself on the field.
IND will have more difficulty with its set of retirements than AUS will. For instance, their potential retirees are older and more widespread, plus their FC system is still lacking.
ENG have a reasonable (though by no means great) batting lineup, reasonable (but again not great) fielders and a bowling lineup that thrives in some conditions but is utterly anodyne in others. Not #1 material.
SL have some fine batsmen (especially at home), but their pace attack post-Vaas isn't very impressive, whilst Murali is probably past his prime and is nigh on irreplaceable anyway. As for Mendis, I remain unconvinced as to his longevity as a Test bowler, due to the lack of a requisite stock delivery (in ODI's he should have no problem).
PAK has a super-talented bowling lineup, super crappy fielders and a super mediocre batting lineup. Not #1 material at this stage.
ZIM is likely to remain a non-entity for as long as Mugabe lives, whilst BAN probably need better facilities and a better team culture to exploit their talent and to stop themselves from finding ways to snatch defeat from the jaws of victory.
As for WI, there is some talent coming through the ranks. Deonarine could yet be a decent replacement for Chanderpaul, as he has already shown an ability to ground out runs in difficult circumstances. Nash has too, but struggles to rotate the strike. Dowlin and Barath did show enough to demonstrate that they could potentially succeed at this level. Kemar Roach looks good and is definitely quick, but needs to find ways to take wickets more consistently. Taylor and Edwards are not outstanding bowlers, but both have improved quite a bit. They both need to find ways to stay on the park, though. Bravo does too (even though he doesn't do quite enough with ball or bat for mine). Benn and Miller are probably better than any other spinner WI have tried since Ramnarine, but neither have shown themselves to be Test-standard as such. Benn isn't because he's ineffective on most decks, whilst Miller hasn't had much of a chance. I doubt that Rampaul and Tonge are Test-class from what I've seen, but I could be wrong.