Even as bad as that is, you're making it out to be better than it actually is.
Not every planet gets a Senator. There are a lot of member planets that don't have them. Also, for planets with multiple distinct populations that have a Senator, all the minority populations get is a non-voting Representative (e.g. in episodes 2 and 3, Jar Jar is the non-voting Representative representing the Gungans, while Padme represents the humans of Naboo and also the planet as a whole, as the sole one who actually has power)
Even as bad as that is, you're making it out to be better than it actually is.
Not every planet gets a Senator. There are a lot of member planets that don't have them. Also, for planets with multiple distinct populations that have a Senator, all the minority populations get is a non-voting Representative (e.g. in episodes 2 and 3, Jar Jar is the non-voting Representative representing the Gungans, while Padme represents the humans of Naboo and also the planet as a whole, as the sole one who actually has power)