I don't. I've seen human teams try to set up forward fronts and they're always very easy to run down. Now if teams received extra build points at each upgrade then maybe humans could afford to make an armory and/or medstation (which are the only real reasons to have a forward base) and the necessary turrets to defend them, but as it stands humans do best when they clump all of their vital structures behind a wall of turrets that doesn't need to change direction much.
However, Jex's idea is a good one because it would enable humans to relocate their base mid-game without disabling all of their defenses (which is suicide once aliens have frags). Mid-game is also when humans get jetpacks, so being able to move then would be very nice.