Sorry if that came out a bit cocky...
But the first post, sort gave me the indication that this thread is aimed more towards the non-SANZAR teams. As if they are at another level as opposed to Ireland, Wales and England.
If I can throw in my 2 cents, I think SA is in a prime position, and we have so many great exciting players coming through, that I can see a very strong team for the next World Cup.
On the question of preparation, well this can mean a few things. Coaching, staff, players, tactics, etc... On those fronts I see SA in a pretty good spot. But I am thankful that the World Cup is still a while away, as I don't think our young team will be able to cope as well as I would like them to cope at a World Cup. So the preparation part that I think SA is now focussing on is getting the core of the team experienced, and iron out certain aspects that was a problem.
I also feel we are in a good position ATM. I think the core is there and the coaching staff even if not the best ever is two notches up from what we had in the last 'cycle'. I think we should really have been pushing in 2011 because we had the players and the time but sadly no coach/game of any value and no luck. This time round I think we still have the players or at least should have. I'm assuming here that young guys like Etzebeth, PSdT, Goosen, Serfontein and Le Roux will continue to grow and that some of the older heads will still be around and in good form. That is a lot of assumption but I expect it will work out in more instances than not. If I were to have a bit of look through the stcks..
Props:
Mtawarira is only 28 so should be in fine form for a prop in 2015 unless something unfortunate happens. Jannie (30) I think is still doing well enough but at 30 and not a superstar.. well, I would look at seriously developing someone other than just Oosthuizen (who should be around for a long while still at 24). Guthro (32) should have shelved as is IMO simply because he is based overseas and we have other options and will need to develop them at some stage. Looking at our options back home I would like to see Morne Mellett and Lourens Adriaanse (23 and 25) start to get look-ins from the Bokke as back-up or hopefully later even pushing Beast and Coenie.
Hooker:
Between Bissie and Strauss we have arguably two of the wrolds best and they SHOULD be fine come 2015; established internationals and seniors in the squad. Our fringe options drop off somewhat but are still very able should we lose both for some reason.
Locks:
Hmm, the project of replacing Matfield, Bakkies and Rossouw/Bekker is half complete in Etzebeth. While Flippie and Kruger are good players they aren't sure for 2015 IMO. PSdT would probably already have had his chance if he weren't injured. I see he is playing his first game back from injury on the weekend so maybe the last fixture of the Rugby Champioship?? Probably too early and HM will probably let him play another season of SR before his Bok call up and probably rightly so. The other fringe options are either too far off ITO development or simply not up to scratch IMO. Gerhard Mostert has dropped off the radar since his move to France.
Loose forwards:
I think we are pretty good here. Our current crop (Flouw, Vermeulen, Alberts and Kolisi) are doing just fine and there are good players on the fringes; Brussow, Arno Botha, Labuschagne and I like the look of both Kriel and Cook in the youngsters... its more a question of who do we leave out and here I am hoping that we don't see Spies back soon in anything other than a Bulls shirt (and even there he is holding up the traffic). It would simply be criminal. J Smith and Burger won't see game again probably as well. No reason to look back.
SH:
Here is the first real question mark IMO... the heir apparent Hougaard has been less than inspiring of late. Time will tell if he can turn it around and it could be that this year the personal issues got to him like it did Morne Steyn last year. I hope that is the case. Pienaar is just so slow I have time to go through a whole litany of swear words before he evenlooks up to consider providing some service. FdP I hope has the legs and it seems the Japanese road could be the right one to extend his carreer as he was sublime at home but there will be some questions till. Vermaak and Kockott are both on the fringes and overseas so probably will drop off the radar? The Free State duo are probably next in line.
FH:
Between Steyn, Lambie and Goosen (if not injured) we should be fine. For SA a world class 9 is more important IMO. The others are either too young and only promise at this stage or just not up t scratch again.
Centers:
Serfontein and Engelbrecht, thank you. To back them up.. Will JdV or Jaque Fourie have the legs? Will Frans Steyn pull up his socks and drop 10kg's? JdJ is there on the fringes. 2015 will be too early for some of the other promising up-and -commers IMO. The question here is if JdV isn't starting will Louw captain or who else? Strauss.. but Bismarck!
Wing:
Habana and JPP should be fine. Willie le Roux can play either of 14 or 15. We'll have to wait and see but I am not worried. The rest have too far to go.
Fullback:
Unless Ludik comes back to try his chances again it's a two-horse race between Taute and Le Roux and HM will probably keep tabs on his love-child Kirchner. Lambie there to cover as well and Frans Steyn? Well, not unless he changes things around.
EDIT:
So a possible if not probable squad of 30 (with a heavy bias on my personal preferences and not HM

):
Mtawarira, Oosthuizen, Mellett, L Adriaanse
Bismarck, Strauss, Brits
Etzebeth, PS du Toit, Kruger, L de Jager (have to back family!)
Alberts, Louw, Kolisi, Vermeulen, Botha, Brussow
Du Preez, Hougaard (I'm backing him to make a return in 2014)
Goosen, Lambie
Serfontein, Engelbrecht, JdV (well he doesn't like slowing down now..), Frans Steyn (I believe John Smit will get the best out of him back and his utility value is big)
JPP, Habana, Le Roux
Taute, Ludik
fringes:
JdP, Steenkamp, Malherbe
Chiliboy
Flippie
Labuschagne, Coetzee, *gulp* Spies, Burger,
Pretorius, Pienaar, Vermaak, Kockott, Van Zyl
Steyn, Jantjies
Jaque Fourie, JdJ
Kirchner
Who did I leave out?