Pwcbird: Glad you've got the same dilemma as me! I probably will go for the Twin Two Jane tank, unless somone pops up with a comparable suggestion. I guess it depends how much walking you will need to do with baby and DS. You could opt for a sling/baby carrier + single buggy for DS and then maybe go for a buggy board when the baby gets a bit heavier and you want to use the buggy. But I'm thinking to go for a tandem for at least a year, and then revise it next summer depending on how much DS2 is still using it. I don't think there's a lot of choice for the tandems, really - those Jane ones seem to be the market leaders, unless I'm missing something. There seems to be more choice with doubles - lots of different makes which look quite manoeuvrable, but I don't want one of them as I think the seats are too narrow, so okay for small babies but not bigger toddlers, which is why I think I'll go for the Twin Two - it's the widest tandem I've seen. I'm glad I directly compared it with the Powertwin. I was concerned the Powertwin wouldn't give DS2 enough room in the front and that his legs would get in the way of the wheel - the bloke told me it was "exactly the same amount of room" as the Twin Two model, but didn't have one to show me. When I popped in the other week, they had the two models so I could compare them side by side and there's a huge difference in width (although, interestingly, the Twin Two is slightly lighter than the Powertwin), so if plenty of room is an issue for your DS then you'll want to look at that. Let me know if you find any other good alternatives yourself while you're looking!
All this talk of inductions and placentas got me trawling the net for information ... always a dangerous thing ... and I couldn't find any specific stats about placental decline and age. I think your view, Didoreth, makes a lot of sense. Healthy baby, lots of kicks and movements, no reason to assume placenta not doing its job. And we'd all probably be screaming for an induction if we get to post 12 days or more, regardless of age. Good luck Didoreth - we're rooting for you!
But, I think the main thing is, if you are booked in for an induction or section at whatever stage, and are happy with it, then that's the main thing. It's the mother's confidence in whatever procedure she's opting for that's the crucial factor - if you're happy with your plan and have confidence in your team, that's all that matters. But if you aren't sure why you're booked in for something and it's worrying you ... get them to give you the answers.