I think its a good idea as long as employers are supportive and the benefits are easily transferable etc - I think I got a couple of days off first time and two weeks the second. I would have loved to have spent longer with my kids in the first year and to have the choice of how we 'spent' the leave would have been much better than being told it was just down to my wife.
Guess there will be lots of problems like - what happens if only one partner works? How do we educate employers etc?
IMHO its Absolutely a good idea.
I always took a week or two off when our older kids were born (now in their thirties) but that ate into our holidays.
It would be great to have some paternity leave precicely for those early weeks.
I remember not wanting to miss out on holding little one.
I also remember being glad to get a rest by being at work for 8 hours a day - LOL.