Yeah it's just not up to the original's standards, not even close.
I'm only watching it because I want to know what the fuck they did to the plot, and seeing the treatment older characters get.
The protagonist's mom looks a bit like Mamimi (well, a "K-ONized" version of Mamimi, anyways), and she mentions that she's waiting for someone (presumably Hidomi's father), and mentions him during a sequence with the MM iron, like making a hint about some older character (naota?) being related.
Also what's up with Hidomi's tshirt during the night sequence?