Italy has been wide known for having tumultuous coups of government. This should probably stop. Corruption is one thing, and a dictator another, but since Berlusconi is okay then him having a few extra powers is adequate. I hope that the Italian government has him only be in power for 8 years though.
Yes, Silvio Berlusconi's alliance with the Northern League was a good thing for Italian politics because of the sphere of influence. It can be seen how it benefited Italian politics and how changes were made for the better in some situations. With all politics, there will always be good and bad decisions no matter who they are allied with. Silvio Berlusconi's alliance was a smart move.
No, Silvio Berlusconi's alliance with the Northern League was not a good thing for Italian politics, because it was not helpful to the unity of the entire country. Belusconi should have allied himself with both the north and the south, rather than reminding people of their differences, rather than their similarities.
Control of the Northern Alliance controls much of Italian Politics due to its dense politicians and affluent voter base. The north is typically more adamant about being involved in politics. When the North made it clear that they did not want Berlusconi running again, and he didn't, it makes an analyst wonder what else they told him that he obeyed.
Silvio Berlusconi's alliance with the Nothern League simply signals the possibility that he may join the race in the upcoming election. Given that he's currently facing charges for tax fraud and his past policies left the economy stagnant I wouldn't jump to the conclusion that this is inherently good for Italian politics.