He's an idea that won't fly ... And it's a finite list.
An in depth financial analysis of every MP.
Wages from Parliament.... Perks and expenses from being a MP
Second, third etc jobs income.
Media income
Side hustles
Assets held in family names and trusts
Properties owned ( not many who own one property)
Share and dividends held
Sponsorship funds and perks
Etc etc, etc
All open to public scrutiny
How many would survive inspection.... Old enough to remember an MP forgetting that he had bought a block of flats.