Right now, you only have one barrier to face which is the board. Once you enlist, you have many barriers in to face and overcome. Are you fully qualified at your job? How are your evaluations ( this is a big one)? What is the command policy for submitting( how early can you submit in your first command)? Does your CoC care enough for the submission to help you in the process ( they should)? Are you willing to wait until you fourth year in to submit? Also, you can get in trouble and learn bad habits from others that will or can warp your mind ( i don’t know but it happens)
Many other things that I can think of and have seen. Honestly, I believe the process is harder for enlisted than coming off the streets.