I did similar sprites comparison so you would know what are you missing out playing PS3 and Steam versions

I checked and yes. In steam ver Rika has only a smiling sprite.

I think Steam sprites have huge mischaracterization. Satoko just seem angry, Rika looks too childish, Rena seem to be just a shy anime girl. PS2 sprite represent original emotions the best and I don't understand why they had to change them to worse versions. Maybe they're more clean, but they're soulless.