That is your opinion, it looks quite nice to me and you should not really be aiming for "looks" when it comes to military products.
However it may look, Pakistan has had the M113 since the 1960's, utilizing it in almost every terrain imaginable and against various adversaries employing numerous fighting methods from unconventional fighting on the rugged terrain of FATA, conventional warfare on the plains of Punjab and semi-conventional fighting in Bosnia, Africa and so much more.
Our engineers know every centimeter of this machine and with 60 years of experience in countless conditions, I am confident they know what is required to perfect the M113 and it's many variants that are used in Pakistan.