The military would just get desified and ruined. Is that what you want? You see there is continous tension between western ideas and desi way of doing things. Since British left the police, civil service has become desified. The military because it largely remains isolated from the sea of Pakistani dynamics has been largely insulated from being desified. Your suggestion would end up desifiing the military and ruining the last institution that is still intact.
It is known fact that in extended times when army was in power corruption, nepotism crept into the military heirachy leading to reduced professionalism. We saw that with Gen. Zia's era when the army was caught politiking ignoring it's primary job - defence of it's borders. Result India grabbed Siachen which we still have not got back.