if you know any Chinese, PLA makes perfect sense and it's a really good name to letting people feel the bonding, and its ideology...The PLA started as a guerilla army w/o any distinctive branches as it is today.
IMO, it's high time to rename it People's Republic of China Armed Forces with branches as PRCArmy, PRCAF, PRCN, PRC Strategic Support Service, PRCArmed Militia, & PRCCoast Guard.
the "armed force" on the other hand in Chinese is much more like a translated word and make people feel distance
so as long as its Chinese name is good, why they care about in direct translation in English?