It sounds like I'm not going to get any traction here. This bad matchup issue with repeated matches due to uncounted manual score adjustments or "invisible" matches is something I've seen in most matchplay events I have run, participated in, or watched on a stream.
Re: new players - that's the worst. I explain the swiss format and that they'll play people that do as well as they do, and then after round one do the points adjustment and ... they wind up with the exact same group on a different game and think the thing is rigged. Yelling is fine, but I usually run events in a very loud 13000 square foot arcade with hundreds of games, poor sight lines, and a BYOB policy that has people heading out to the parking lot at odd intervals. It's just not possible even with the overhead speakers. Someone gets missed, then I need to pull people from two or three other groups to make a full group for the last leftover person.
Sure, I hope they learn too. Either way this isn't a solution and when something like this happens, you need a way to correct for it appropriately.
This sounds like a good idea and I've tried it multiple times. It makes it even worse!
-The player list is unmanageable on a smart phone. No wifi slows things down. Finding a player in a list of a couple hundred names to re-register them is a huge pain. Sometimes people have a different profile for their newly-registered account and their old events, they all show up in my list. Removing duplicates will help this, but it's still quite hard to find names in the list as they check in.
-The pre-registered list is my only list of who's actually planning on participating. When I remove everyone and they get added back to the giant "every player" list, it is even more difficult to manage.
-People want to know why they don't see their name any more after registering yesterday. I didn't think this would be a problem, but it has been and takes more time to explain.
-People show up 15-20 minutes early for an event. There is just not enough time to have face time with 30-40 people as they are arriving. I need time to discuss the rules and basics with new players and allow the regulars to self-register.
I know you're trying to be helpful, but saying "your're doing it wrong, it works under these conditions" doesn't help, there will always be issues. I run four to six events a month and have for years. Even under the best conditions you have to shuffle things around sometimes. When this results in people saying "why did I play the state champ twice but not my friend at all" (or vice-versa) it's a problem.
When there are issues, I need a way to fix them without imbalancing the event or providing an advantage to certain players. Right now I'm seeing issues that I would be able to resolve if I was manually assigning matches but the software doesn't allow me to fix. If you don't want to or can't address the problem, fine, but it's a thing I've hit a lot and saying it can be worked around by being Super TD isn't helpful.
If I read your prior post correctly though - it sounds like steps are being taken to allow manual group swaps and adding groups mid-round, that will definitely help!