...but first-past-the-post block voting is one of the least fair.
"Gridlock" can also be a feature for those who do not want to see one party have the power to do whatever they want. For instance, some Republicans are happy to see Obama get blocked at every turn just as some Democrats were happy to see GWB obstructed. It does seem like it's going farther and farther, with calls to block any supreme court nominations by Hillary, but gridlock in and of itself is something you occasionally get in a system with checks and balances.
And I don't think anyone is advocating copying the Italien governmental system?