This is definitely not a ridiculous idea. Basically, this will make politicians have more "skin in the game".

Otherwise, there is a misalignment of incentives for the elected representatives as you point out.

For an (unrelated) example of this misalignment, N.N Taleb outlines in his works why most financial "news" or "recommendations" are completely useless - the people peddling the "news" are trying to sell a story. If they actually put their own money (like their personal savings account) based off their recommendations, a lot of them would disappear very quickly. At the moment, most of them have no "skin in the game".