Italy's ideas are going to be the same as whatever state forms Italy, so if Venice forms Italy, Italy gets the venetian ideas...
Johan did say that:
But Johan said in another thread that if Novgorod forms Russia, Russia keeps Novgorod's ideas. It would be weird if some countries get new ideas after forming a new country, while others don't.
And correct me if I am wrong, but I think I haven't seen any dev diary that presents ideas of formable countries?
Source: http://forum.paradoxplaza.com/forum...nfo-Update&p=15851056&viewfull=1#post15851056