I posted a bug today to see if there would be any reply. I'm not sure if they care about improving the algorithm. I also commented in the bug thread for the issue. You many want to check this out as well.
https://answers.ea.com/t5/Bug-Reports/Broken-matchmaking-Facing-a-guild-with-60-million-more-gp-in-TW/m-p/6828955#M13319
I see at least two issues.
1. Guilds split off players to get lower power match-ups. This is low IMHO but could be addressed by considering the number of players so guilds don't draw opponents with a large player count disparity. IOW, if you have 30 members in TW you get a get matched with as close as possible to a similar number of players.
2. IMHO it appears algorithm focuses too much on top end rosters of players. I believe what is happening is after a player has a certain number of top end rosters the rest are not counted or greatly reduced in value for matchmaking. Obviously a larger number of team particularly good ones is a big help on offense and defense.
Since we don't know how the matchmaking works this is obviously conjecture on my part but the one guild in our alliance that is constantly affected has always had smart players with good rosters for their GP at top focused on guild events and legendary stuff. They beat HSR at a low GP because they build good teams for the HSR. After matchmaking changed they started drawing teams with similar top end rosters but also multiple other excellent rosters leading to a huge mismatch in gear levels, zetas and the number of squads. Our top guild has much deeper rosters and has never drawn a mismatch in the 150m+ GP range.
In terms of motivation for CG EA to fix this versus adding new content I guess it comes down to the profit motive of using development resources on even more new content that generates revenue. Also the guilds splitting off players or with the deep rosters in scenario #2 are more likely to spend money and are likely not the ones complaining about current matchmaking system.
I'd just appreciate a response saying the system is working as intended in which case I would not put so much time in that guild planning for TW and focus more of our efforts on LS and DS TB now that HSR is farm. We have a very detailed TW defensive and offensive system which lets us do well but in a grossly unfair match-up it is really hard to win with tactics and most guilds in 130m+ range and not terrible at TW.
