I am excited about Inzaghi's arrival actually
I even vouched for him last year when I wanted Allegri gone because I thought we needed a new approach
His body of work is definitely impressive no doubt, his team plays very direct but the only worry is his Lazio team have also been known to leak in a lot of goals so it would be interesting to see how he addresses this.
He turned Lazio from the most boring team in Italy to one of the more attractive teams to watch and has had a good record in knockout cup competitions too so the potential is clearly there.
Let's remember that before we gave Allegri an opportunity to excel , he was sacked in humiliating fashion by Milan and if not for us giving him a chance to manage the best squad in Italy, he would have found a job at Roma or some mid table Serie A club and would have never won as many trophies as he's won with us and he would have probably not been rated as highly as he is today. So my point is that it is not always necessary to hire a 'proven coach' when you already have a strong squad and especially when you have a strong management like ours to back them.
If the management believes a manager like Inzaghi has the personality to coach us, then you would have to trust them.