You have a point of merging the Senate into the House.
I'm a fan of Australia's federal voting system. We have a house of Representatives where the country is divided into 151 regions by geography of roughly the same number of people. One in Sydney is a few suburbs, the one in the south of northern Territory is almost the whole territory excluding Darwin.
Then there's the Senate, where each State gets to elect twelve(six every 3 years[1]) Senators. Territories (Australian Capital Territory & Northern Territory) elect Two Sentors every election.
Everyone in the state gets a say in who represents them as Senators and allows minor parties to get representation as only 16% of the total vote is needed to get a seat. (The Greens typically get 1-2 of seats in each State)
So for areas with geographic issues get to have a say (rural people vote for the National party who represent farmers interest).
And there's the occasional independent who gets in too and some other minor parties.
The other major difference is we have optional fully preferential voting. You can nominate anyone running in your seat as your first preference on voting day and you give everyone on your ballot a number from 1 to however many. When the Australian Electoral Comission counts the votes if the person you put first is eliminated from the count (they only get 175 votes from the 110,000 who cast a ballot), then your voting slip still counts and your vote transfers to your second choice.
Also we have compulsory* voting here. If you are enrolled, you are required to vote and will get a small fine if you don't. *You might think all politicians are bastards and cast an unfilled ballot paper into the box, but you have had your ability to have a say. I'll also note that people may take the time in the polling booth to draw a penis on their slip which isn't illegal and doesn't invalidate the vote a long as the intention for who is being voted for is clear. There are also prepoll stations and an option to postal vote exists.
We also have a tradition of voters getting a "Democracy Sausage" after voting. It's common that voting stations (elections held on Saturdays) are schools and local clubs have barbecues and sell cakes etc as part of fundraising.
In summary, I like out two house system as the Senate allows minor parties to get representation where they wouldn't otherwise if we just had the House of Representatives. [1] we sometimes have double disillusion elections where the government has the options to call one if they keep passing legislation in the house and the Senate keeps rejecting it and in that case all seats are vacated and the states elect 12 Senators, but it's not normal.
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I can't help directly, but the people at https://lemmy.world/c/techsupport mighr be able to.