Yngling dropped

For match racing, the exact boat used is much less important. The boats used on the top-class tours vary immensly from event to event- and the ladies who'll be going for Olympic spots will have to compete on the top circuits. As said, the Yngling isn't a suitable Match race boat, and keelboats are considerably more "regional" than dinghies. So they've plumped for a boat which has been used at top level, and that presumably has been priased by those who've used it.

I guess...

You could say the same about J80s or FC8s or any of several other classes that have been used for match racing. The simple fact is that event organisers use the fleets they can get hold of and there's nothing about the Elliot that makes it especially suited for match racing, nor AFAIK has it been used anywhere outside ANZAC. I'm not particularly complaining about this decision but there is no coherent or consistent rationale behind the choices for the women's keelboat and dinghy. These are entirely political decisions. 

What's the prime class designed as a match-race boat? The IACC. 25 tonnes of lead in the bulb - not exactly fast to accelerate. You'll find plenty that argue that fast acceleration is precisely what you don't want in match racing, because slow accelaration punishes tactical mistakes. As for "layout to allow the crew to perform quick and unpredictable manouvrers properly" - on some IACC boats you have to disconnect the forestay to gybe!

I'm not a defender of the Yngling but the arguments you are making are precisely the same as those that made it a poor choice for fleet-racing. Actually you can make a good case that the Yngling is more suitable for match racing than fleet racing.

That wasn't the point I was arguing. My point was that there is no consistent logic between the two decisions made regarding the Women's 2-person dinghy and keelboat. I'd have liked both changed.