[Fire Q&A, Help & Troubleshooting] KennBr:
I am using Linux as well, I got the persistent root going, Super SU installed as described in this thread: http://xdaforums.com/amazon-fire/orig-development/root-t3272362/post64347634#post64347634 I tried intsalling the Now launcher just via the Play Store app. However, when I tried to remove the bloat from the /system/priv-apps/ directory I also noticed the filesystem was read-only so I remounted it like so (I am totally unsure if this is proper)

adb shell
su
mount -o rw,remount /system

That seemed to give me sufficiant read-write access with a root terminal.

As in a root terminal? I launched an adb shell and used su and mount as described above to get read-write access and a root terminal, then did...

cat /data/local/tmp/bloat_list | while read process ; do pm hide $process ; done

and

cat /data/local/tmp/bloat_list | while read process ; do rm -R $process ; done

It seemed to remove the directories associated with the given item on the "bloat_list" file which I compiled from the "safe to remove bloatware" threads and pushed to the /data/local/tmp directory using adb. I did this prior on 5.0.1 without breaking too much... Aside from not being able to open my account settings any longer.

Contents of my "bloat_list"

com.amazon.ags.app
com.audible.application.store
com.amazon.camera
com.amazon.client.metrics
com.android.contacts
com.amazon.csapp
com.amazon.device.backup
com.amazon.h2settingsfortablet
com.amazon.kindle
com.amazon.kindle.kso
com.amazon.kindle.otter
com.amazon.mp3
com.amazon.kindle.otter.oobe
com.amazon.kindle.otter.settings
com.amazon.kindle.personal_video
com.amazon.legalsettings
com.amazon.photos.importer
com.amazon.photos
com.amazon.platform
com.amazon.tahoe
com.amazon.venezia
com.amazon.whisperlink.core.android
com.amazon.windowshop
com.amazon.zico
com.andoid.contacts
com.android.calendar
com.android.email
com.audible.application.kindle
com.goodreads.kindle
com.nuance.edr.androidservice.service
com.amazon.webapp
amazon.jackson-19.apk
com.kingsoft.office.amz
com.amazon.kor.demo
com.amazon.ods.kindleconnect
com.amazon.accessorynotifier
com.amazon.cloud9
com.amazon.weather
com.amazon.calculator

So every item in that list would have been acted on with both pm hide and rm -R (just clarifying)

Yet somehow a good amount of the items on that list came back over night. I'm not really sure my method for removing the files really had the effect that I think it did, because everything still seemed to work as if I hadn't deleted it... Well except for the "My Account" section of the "Settings", so I don't think I should have done the "rm -R" part to delete the files because it seems to have had some kind of effect.

As for the launcher situation, I backed up the firelauncher first before trying to remove and hide it and that did seem to work, but given the parental controls message I had to restore the launcher to maintain functionality. I don't think that trying to delete the items on the bloat_list first might have "broken" something and caused the message though because I tried to change the launcher BEFORE the items on the bloat_list.

I tried installing the Apex Launcher and for whatever reason it's working even without hiding or deleting Firelauncher... Though I haven't rebooted yet so I'm doubting that will remain the case.

As for the Rom Toolbox app, what exactly does it do? Reboots the device into some kind of custom recovery where I can alter settings? I've never heard of it before.