How is matchmaking done on specialty playlists like Team Snipers? Do you use the player’s overall win rate across all play lists for Trueskill matching or the win rate for that particular play list? The reason I asked is that I’ve noticed that matchmaking in playlists like Team Throwdown and Team Snipers seems to be a disaster. Team Throwdown almost always leads to quitting because of mismatched teams. Similarly, a typical match in Snipers ends up w/ 1 person going like 23 and 8 and everyone else going like 6 and 10. I am not any good at team snipers, never played it before it came out the second time, so I shouldn’t be matched up w/ people who were top snipers all the way back to Reach. But I have been. It could simply be that the numbers of people playing these lists are too small to get evenly matched games, and if so that’s just too bad. But if not, I think you ought to, if you don’t already, use Trueskill ratings based on individual playlists and not overall win rates.
Trueskill will never work properly in playlists with low population. It’s why having a low population and a bunch of playlists is bad. I assume it looks for people of similar skill per playlist but when there isn’t that many it will increase the skill range or get rid of it completely to speed up the matching process. If it only looked for players of similar skill with a small pool to choose from then MM would take a very long time. You’ll see it get even more lopsided with a full team because it then tries to match full teams with other full teams thus thinning out the pool even further.