To add, there are many proposals[1] for Senate[2] reform[3]. Even a cursory glance reveals[4] an abundance[5] of different[6] suggestions[7].
1. https://dc.law.utah.edu/cgi/viewcontent.cgi?article=1378&con...
2. https://casten.house.gov/imo/media/doc/senate_constitutional...
3. https://democracybillofrights.org/how-and-why-to-reform-the-...
4. https://www.sciencedirect.com/science/article/abs/pii/S09626...
5. https://casten.house.gov/media/press-releases/casten-introdu...
6. https://rooseveltinstitute.org/wp-content/uploads/2020/07/RI...
7. https://electoral-reform.org.uk/when-it-comes-to-fair-votes-...