Mentioned this on the thread but one of the biggest starting points for informed choice is actually having data to be informed with.
All the stats for CS and instruments are widely available. However there is no data for 3rd or 4th degree tears which is something women are hugely concerned about. In the drive to reduce CS this kind of information is important as there is no point in reducing CS if this is at the expense of severe tears. And because the data is not freely available no one is looking at accountability, risk factors or long term costs.
If you try and get information on this the best answer you'll find is an estimate rather than figures. That's dreadful for enabling women to make an informed choice.
Its all very well saying we need this campaign on choice but this may in fact drive CS up which might not be in the best interests of women either if the reasons behind why women suffer tears are more down to policy and poor management of labour rather than women just being unlucky due to physical factors.
You need the data first to be recorded and analysed before you can make an informed choice. You can't run before you can walk.
I know there has been campaigns for 'normalising' birth by other institutions and groups, which have been about looking to reduce medical intervention in order to reduce harm to women, however these have somewhat demonised C-sections in the process which is unhelpful.
C-Sections are not good nor bad. They are something that should be used appropriately. And I say this as someone who had an ELCS by choice for anxiety. I recognise that what I chose isn't right for everyone and it should not be a choice between major surgery where the risks are more predictable and taking a gamble that not only on nature favouring you, but staff being able to manage labour under more pressurised circumstances than a scheduled operation. And I believe that at present that is the choice that really faces women, rather than one that is based on evidence based medicine.
So Step One, which would fit nicely with there being a major review of maternity services is to exam women's concerns and what information they need to address these concerns and how hospitals can be held more accountable.
Step Two is then about how you provide women with information to make informed decisions and how you get hospitals to support and provide care based on these choices.
We are a long way off Step Two and we'd be unwise to try and go for the original aims of the OP without taking Step One because this could potentially be harmful in its own right.