I suppose you'll have to pardon my cynicism towards how exploitable the general public is, or rather, how exploitative 24 hour political coverage is, at large to be worrisome that this wont just end up in pronounced levels of Tall Poppy Syndrome spreading through the population.

https://en.wikipedia.org/wiki/Tall_poppy_syndrome

Edit: Let me clarify something before it gets confused, I am not suggesting that the sort of inquiry on finances you're proposing is itself an example of Tall Poppy, I am saying that left unchecked the sort of thinking that goes into "we need use financials to vet the worthiness our prospective politicians" could have the result of overcorrecting the inquiry of integrity and objectivity in office to many of the symptoms endemic to the Tall Poppy phenomenon.