One bugfix, if you want so, is that in Germany, on federal level, we only have one chamber of pairlament, the Bundestag, that is directly elected by the people. The other chamber of pairlament, the Bundesrat, is a pairlament constituted of representatives of the governments of the federal states, i.e. a pairlament of the executive.
The German system is what the US would have been if they would have regularly updated their constitution.
It was largely modelled after the US, with bugfixes applied. It definitely has issues but isn’t remotely as fucked as a partisan 2-party system.
One bugfix, if you want so, is that in Germany, on federal level, we only have one chamber of pairlament, the Bundestag, that is directly elected by the people. The other chamber of pairlament, the Bundesrat, is a pairlament constituted of representatives of the governments of the federal states, i.e. a pairlament of the executive.