It would be great to see another round of updates to group stage tournaments. It's a great concept to have 2 stage tournaments, but could be greatly improved by fixing existing bugs and some minor updates.
Given the complexity of Group Stage I would be completely fine with it being exclusively for 2 player games. I don't think online 3+ player tournaments can be truly competitive because one disconnected player can spoil the results of any game. 3+ player tournaments are therefore only for casual tournaments in my eyes, no need for Group Stage, just use Swiss or Multi-elim. Competitive 3+ player board game tournaments need to be IRL with an entrance cost and some real social consequences (shame) to ensure fair play, none of this is feasible on BGA.
Simple tournament update requests:
1) Fix Round Robin match date scheduling in general. Have a simple drop down option to choose the start delay between each match. It's currently assumed "All at Once" unless the host manually edits the start date for each match. With edits, the host can effectively only do "one at a time" scheduling.
Have this Round Robin fix apply to Group Stage tournaments as well. Round Robin should work well in Group Stage since each group should be small. Even limiting RR group size to 8 people maximum would be reasonable.
2) All for only 1 group in the group stages. This allows for simple, common tournament setups like Swiss into Top 8 single elimination without any real coding adjustments.
3) Fix the match date scheduling for group stage. Currently only allows Matches 1-5 to be scheduled. Make it always go from Matches 1-15 and ignore any excessive dates. Group Stages could add further restrictions to number of matches. Maximum 8 matches in stage 1 and maximum 7-8 matches in stage 2 would be reasonable.