The parent was around direct democracy - where a particular question is posed - and frequent hybrid is randomly selected people to work on a specific question.

If you are saying choose people at random to be an MP for 5 years ( or whatever ), then sure that's different and it would be an interesting experiment - though that would be a pretty stressful job to pitch people into at random.

It would be interesting to see how those random 600 people would organise to get stuff done. In the current government you have specialisation - home secretary, foreign secretary etc - you wouldn't want to keep that structure and randomly allocate roles - but if you have the 600 vote on everything then you still have a bandwidth problem.