Completely WRONG answer ... the 'regional' system just hurts the piloting profession; while your willingness to 'fly for whoever' shits on your mates and shits on you as well -- you just don't realize it.
You will get flight time, you may get 'experience' (what kind?), you WON'T get 'bigger and better things' .... but you WILL get used.
And you'll fuck your bretheren while 'getting yours'.
Believe it.