Bidding unbalanced strong hand & responding to intervention

The auction could be relatively straightforward because South can pass East's 2S bid knowing that his partner will make a bid and when North reopens with a double for take-out, South simply passes expecting that 2S doubled will give NS their best score. If East scores 3 tricks, that is 5 off doubled worth 1100 and more than a slam - if he scores 4 then 800 is not quite enough! If South does not want to collect a penalty he might bid 3NT right off which should show good spades and 10 points and North can raise to 6NT. However, I prefer a pass from South, because North might have one long suit and be hoping for slam in that suit, so when he rebids in that suit South can then show excitement. On this hand, as mentioned North will reopen with a double. Note that I think it is South's job to take the penalty or go for slam - the South hand is worth 10 points - the spade bid in front of him enhances the hand and makes it worth going for slam. In fact had NS been vulnerable I would respond to the take-out double with 6NT - expecting to get more points from the slam than the penalty. Even here, jumping to 6NT (expecting partner to hold 23) might work out best.