Should the Army use the same sort of promotion system as other branches?

I'm sure this is already a dead horse topic, but indulge me, I constantly hear the phrase "we promote based on potential" in regards to a soldiers leadership ability, however, as we all know the Army promotes using Boards, as opposed to the technical tests of other branches.

As a 42A, I sit in on these said boards and watch as countless SM's are promoted, sometimes, in my opinion, way before their ready. Joe Snuffy may have a near perfect firing card, and a 300 APFT score, and can cite everything in AR 670-1, but working for an intel unit, I see a lot of shut ins, introverted personnel who don't seem to have the social skills, to hold a conversation, let alone guide soldiers beneath them. I know points are huge part of the process, but you can rack up near 500 points with a solid PT card, Weapons Card, and a Degree.

I guess my concern, and question overall is, should the Army switch to the way the other branches promote? Using technical tests, that grade you on the knowledge of your job, regulations regarding your job, etc? Keep in mind the tests are not PASS/FAIL, you usually have to score in a certain percentile (ex. only the top 10% get promoted) or should we stay the course and continue to promote using the Board System?