For example, right now, with proportional representation, politicians still have to take the time to campaign in rural and Northern areas,
I don't follow what you wrote, right now, we don't have proportional representation. Do you mean without?
Also, the current elected official in my district never visited my area, not even sure they ever lived here.
With proportional representation a politician could neglect anyone living more than a 2 hour drive from the US border
What is the logic behind this? Are you just inventing stuff?
that proportional representation could drown out the interests of some groups.
Do you mean the billionaires?
Right now, every district throws away the vote of more than half of the voters. To the point of making some people not even believing in democracy and casting a vote.
There are plenty of groups being ignored and disenfranchised, right now.
Ford was elected in Ontario by less than 20% of the voters. The rest does not have a say. The same goes to other parties, like in BC and federal government.