I think the Israeli Knesset is actually a really good example of how to very logically structure a government. The legislature is the supreme body which elects every other position, and votes are proportional and party-based. This kind of system produces a unified government which acts in harmony to advance the will of the voting citizens. In the case of Israel, it accurately reflects the voting citizen's desire for genocidal colonialism, and makes sure to strip voting rights from all the undesirables who might otherwise want to build a better society.