If it's any consolation, lots of anime characters can also be told apart by shape of eyes and hairstyle only.
They've lost a lot of silhoutte strength lately -- not to pick on Digimon Tri again, but contrast the silhouttes in
Digimon Adventure versus Digimon Tri. The hairstyle 'realism' isn't too widespread yet, we still get shows like One Punch Man that have a really good sense of silhouettes, but a
lot of anime are moving towards a 'standard' eye style for a show that really ruins some of the variety we used to have.
But hey, I've been watching anime a long, long time now. It's entirely possible I'm just reaching the "THINGS WERE BETTER BACK IN MY DAY" stage of style crotchetiness. Overall anime's had a lot of improvements to be thankful for, much cleaner styles, a huge leap in background technology improvement, and rotoscoping is creating some amazing work like Evangelion's piano scene.
There's a lot I adore about anime, but I didn't mention it in the last post to try and keep on-topic to the thread.