Very good topic.
First off, Ferrari need to sack LDM. I have no idea how that's going to happen, but whether it's the board or whoever, they need to get him off the F1 scene certainly.
Secondly, Ferrari need to evolve. I think, Domenicali was taking good measures to ensure that, but he's gone. Ferrari need not shed any of the passion they have but they need to be a bit more humble. They need to be more appreciative of people that have served them well.
Thirdly, they need to be patient at this moment. It's very easy to panic and sack and pack. They need to believe in themselves and get better. THAT wind tunnel certainly has been an issue for them forever and they need to invest in it ASAP.
I'd just like to highlight the points that led to their DOOM.
1) The ousting of Brawn/Schumacher after all their years at Ferrari, specially Schumacher. It's not rocket science to figure that he was forced to retire. You don't do that to legends. He was not in his pomp but he was arguably as good as anyone in 2006.
2) The constant promises and press statements by LdM. Highly annoying for Ferrari fans I guess, to be promised so much and delivered so little. As I said earlier, if you're grounded and humble, you at the very least don't make a fool of yourself.
3) The driver handling at Ferrari has been pathetic. First to retire Schumacher, then to fire Raikkonen, hire Alonso, continue with Massa and re-hire Raikkonen. It all sounds quite hilarious. Stability is king. Recognise talent, nurture it but most importantly, respect it. Webber, Vettel, Ricciardo, Hamilton, Button, Rosberg and Alonso in their own stables are examples. Perez didn't make the cut, he was sacked. Massa deserved that long long ago.
4) They need to evolve by supporting both drivers. Enough pampering Schumacher style ala Alonso.
5) Hire some good people. Only some.