I understand your position but this is way overstated. Anything worth doing is going to cost you time and effort and streamlining it will make it lose some important intrinsic property of it.
Approximately 50% of American households carry credit card debt. Do you know why? Because if you truly want something, you'll find a way to get it even if it means financing it will cost you 3x-5x more than just saving up for it. I do not believe that the vast majority of people who care about caucuses would not find a way to attend a caucus.
>It creates a significant discrepancy between those who are privileged enough
I will never buy into this flawed notion of 'privilege' that misinforms more than it explains. Everyone is busy, especially when it comes to things they barely care about. If someone cares about caucuses and primaries they will get engaged and find a way to attend. Evangelicals that care about their faith will find a way to tithe 10% of their income, go to Church EVERY Sunday (not just once every 4 years), and get involved in Church activities. Practicing Orthodox Jews have very onerous stipulations on what they can and cannot do in their daily life, but they care about their faith and therefore they find a way to do those things - regardless of their income and wealth and privilege.
Going to a caucus once every 2 or 4 years on a Saturday isn't a reasonable barrier for those that care. Worrying about those that don't care enough to make time isn't improving things. Your time would be better spent advocating to those people to CARE enough to attend, not destroying the beautiful chaos in order to HOPE it attracts those people into coming out.