Giorgio Piola in this video says that he is highly unimpressed by the MR22.
https://youtu.be/p4U58-_zuUA
It's huge and goofy in his opinion. Too much similar to the FIA showcar.
Also, he suspect Aston could be one of the teams that "may have got it all wrong" referring to the recent words by James Allison, considering the links between Mercedes and AM.
His colleague Franco Nugnes also wrote that "the first impression is that the car could struggle to reach the minimum 795kg weight limit" (weird comment, imho, cause... on which data?)