I love the ebrake.
I use it alot for initiation since my KA doesn't spin my 18's unless they're bald, or when I would get 255/35 Advans from D1. Plus, I have the R33/Z32 rear brakes so my ebrake action AWESOME, so I've really grown to love it.
Honestly, for small tight technical courses, like what that warehouse looks like, it's essential for quick spins and stuff. Also, it's one of the best things if you start to straighten out, a quick grab can help you extend and keep going, when you don't have power to mash thru to oblivion.
I also see it used a great deal by j-guys for angle modulation on the high power cars. They'll clutch kick, then as the ass end comes around they'll stay on power and ebrake a little to set the angle where they want without lifting off the throttle.
And finally for the REALLY rad looking 4 wheel slides into a tight apex the ebrake is crucial to get that angle, and combine with the footbrake to kill speed.
So fix you ebrake, make sure the rear pads are good, buy a new main cable, adjust everything, and enjoy. A bunch of my buddys back in San Diego bought hydro brake handles and tee'ed into the rear brake lines to get better ebrake action rally-style, it's gangster.