While true, I think if the population they derive their income from isn’t merely of that of their riding, but the average of their region instead (entire city/province, not just the riding), then it will seriously minimize the impact.

But even without that, this would strengthen the vote of low income areas as there will be less competition, making those that represent high income areas worth less since they tend to be outnumbered by low income areas. You either get a high wage, or have an easier time not only getting voted in, but having more peers representing people in similar situations.

Still think spreading the average is better, but overall I think it can work better than it currently is either way.