Nah, I still don't buy whole "emotionless , empty eyes" thing.
When they tried, they could make them work, most of the time they were lazy or the director didn't care.
I mean, I love her expression on my avatar, she has that "in love" look in her eyes, another quick example was act 5 when makoto looks extreme happy about usagi being her friend (like, the whole episode was really good with the expressions).
It was Sako's fault? Kinda, but also the staff who couldn't work around with her designs or the director for not asking something better.
One of the problem is that they always tried to make them look these perfect pretty dolls but it backfired 'cause most of the time they always had the same face/expression.
And it's kinda funny how Akira's work for S1/S2 is so plain and always the same face (plus one of the worst imo), yet, he was able to make really good expressions in his own style lol