Here is a novel idea: how about ditching the conventional wisdom that the VP has to be a bland candidate. Pick an experienced presidential candidate, and then pair him/her up with a "tv personality" that can rally the troops, instead of vice versa. The VP doesn't really do shit anyway except function as backup in case the president happens to die or leave the office, but realistically, how often does that happen?
<TBD> / Maddow 2020!
Really?! While Maddow is technically a "TV personality", she isn't exactly a lightweight. She got her undergraduate degree in public policy from Stanford, and then became a Rhodes scholar, and finally got her PhD from Oxford.
The problem with Maddow is that she would do
nothing to break the Trump coalition. You could not design a candidate less politically positioned to run against Trump. Fundamentally, it is a cultural issue which I wouldn't expect someone outside the American cultural context to necessarily understand.
The fact that people think this would be effective bodes horribly for the Dems chances against Trump.