For some context, that you may not know about or only be slightly aware of.
When I started playing pinball in 2013 most tournament were running on Brian Smith's matchplay software that was an iOS app which was the de-facto format used in a lot of mid-atlantic pinball tournaments, especially the monthly masters series.
The software would always use current tournament position for player order, with the caveat that tiebreaker points would make it so that almost 0 players were tied. All groups would receive between .1 to -.1 "bonus" points based on the group they were playing in after round 1, and this was used for all tiebreakers in group seeding as well as overall standings before finals started.
A lot of my pain points in implementing your software in local leagues are that players are so used to running things EXACTLY how they were in Brian's software, which I really doubt you have ever encountered over in the bay area. Players in my league assume that everything will run exactly as it did on this other software, and get frustrated when it doesn't.