W124:W124 and W201 were strange, tasteful exceptions for Mercedes
Are you sure these two models are the only 'tasteful' Merc designs? What about W220, W215, C216, W204, W219, to name just a few modern cars?
But I agree with the critics of the new E-class to some extent; its design is a bit heavy-handed and overdone (especially rear haunches), but it's not an exception in the broader context of contemporary car design.