1) their ratings are all over the place
A large portion of them are doing placements so they don't even have a rating. A large portion of them have ridiculously low ratings (1500, 1600) but turn out to be extremely good. As a result, losing a game means you lose 20 points while winning gains you 5 points.
2) lag is fine for me, but they seem to hate it
The TR is typically 16 (Low) with Koreans, although occasionally it gets worse. I don't mind TR16 too much, but Koreans are used to TR24 so they start flaming, which again I don't mind. But last night, this Terran got so pissed he abused the stacking worker bug. For those who don't know, it's a bug in the game that allows you to stack all of your SCVs and stay stacked while attacking as if they were mutas. Imagine a 720 hp super SCV that does 60 damage. It's banned in tournaments but no one will enforce a ban on ladder.
I appreciate the lower wait times, but I think the threshold for TR should be higher (maybe TR20?).
For the ratings, I think newness should be taken into account. A new player may be a smurf who's actually 2500. Once they finish enough games, they will get a rating and have their opponents' ratings retroactively updated. It wouldn't fix the issue of a pro purposely throwing games or off-racing to get a lower rating though.