Rank turner will work against PAK, because that’ll become a Toss dependent Test - PAK won’t win against Mahraj & Shamshi, if SAF bats first. Dead wicket will again go against PAK, because being host PAK should be favourites here and dead wicket will allow SAF get away with draws - we are not going to get 450 overs in PAK & even if somehow light permits any team under pressure will reduce over-rate to 12/hour so that umpires can call light after 80-81 overs in a day - no make-up time, in PAK winter.
Wicket must not have live green grass on it - in January- February PAK tracks, on live tracks, Rabada, Ngidi & Nortje will send PAK 72/6 at first lunch; but there should be enough deep rooted dry grass so that the game doesn’t convert to a hockey contest by third evening. And, it must have some cracks on it (basically high on clay, but dry), so that ball gets roughed up after hitting the edge of the cracks. SAF actually has a better batting line-up than PAK, therefore on batting shoot-outs, only one team can loose or it’ll end in a draw - wickets can’t be such that first innings ends at 500+ for both; PAK will blow one of the second innings in that case.
So, the best wicket should be exactly what India prepares for the tourists - lively tracks, on deep rooted brown grass with a bit of bounce & pace, but DRY & brittle - first three days good for batting, then it starts to crumble, but not such unplayable that even Markram or Babar starts to put it on spot & it turns squire, kicks from surface as well. Indian Test wickets are actually ideal for a balanced attack team like PAK - helps pacers and spinners in due course of 5 days & it doesn’t offer stiff bounce either for batsmen, ball comes on to bat and it spins.... and it often takes out Toss - the better team will win most times, regardless of batting first or second.