You actually hooked up to e-brake? lol. Most the time people hook it up to a toggle switch or buy the $15 bypass
ASWC1 works well, it's better than the PAC and Maestro most the times. Maestro just has some specific quirks that benefit only a small handful of vehicles (ie new Fords)
OEM mic only works with OEM stereo. You need to use the Pioneer mic. The pioneer mic is calibrated for the pioneer system. Most retrofitting of OEM mics or stuffing the pioneer mic into the OEM location end up causing VERY poor call quality
And yes aftermarket kits in general are hit and miss. You can't expect 100% perfect fitment. You'll get gaps, trims not fitting right, etc. I find the "basic" kits usually fit better. But vehicle specific kits tend to not fit all that well (Ie. Honda Fit/Civic). Often times if the OEM radio is a silver/taupe color and the aftermarket dash kit is colored it's a few shades off. So for people that are OCD, expect to pay more money to get it perfect.