I was thinking about voter suppression and systems to avoid it the other day.
Imagine a system that runs as normally (either first past or a sensible voting system) unless >50% of eligible voters fail to vote or vote 'none' or something like that, and then a random citizen is put in power.
While it would probably help prevent active voter suppression, I have to imagine a combined system where some members are lifelong politicians and some are just thrown in the deep end would not work super well. Given that most elected officials need to spend most of their first term just learning how things work. Though that is also a problem that needs to be addressed regardless.