The Frame work latop 13" is solide. But after 6 month of usage it can be improved in the CORNERS… Corner case ! Isn t it 
PROBLEM :
Angles of the framework are a comon point of failure , this is my laptop IT NEVER FELT ON THE FLOOR DIRECTELY. It has hit the floor in my bag I guess…not hard since I cannot find when it actually happened
SOLUTION :
Add more frame material in the corners, to avoid the bending of the chassis.
THis is a comon point of failure. Smartphone for example have like on the fairephone bigger corners.
