To me, there are two levels of root. One is just root, and the other is root + custom recovery.
Just having root allows a number of things that may be useful to you on this device, such as,
- Permanently disable Carrier IQ (AT&T version)
- Titanium Backup to freeze/uninstall system Apps you don't need running, as well as backup settings and App data
- Root Explorer to change system files (proceed with caution)
- ROM Toolbox to modify things such as icons on your notification bar (proceed with caution)
- Autohide Softkeys App
The last one I want to add here separately is cool App called Greenify.
https://forums.androidcentral.com/e...ails?id=com.oasisfeng.greenify&token=ta7cXiZp
This App allows you to set certain Apps to "hibernate" when not being used. This is not a task killer, nor does it freeze Apps. It essentially puts Apps to sleep that have a habit of running hogwild even when you're not using them (like Facebook for example). When you want to use the App, you tap it to load like any other. When you're done, Greenify will automatically hibernate it again.
Root + Custom Recovery (TWRP in the case of the G2 for now) adds another level of customization, such as,
- Flash custom ROMs
- Flash custom kernels (once any are available)
- Flash individual mods such as the following:
[MOD][9/29] Replace Menu Key with Recent Apps, Long Press Home for Menu - xda-developers
[MOD] [AT&T] Deodexed SystemUI w/o Brightness/Volume sliders - xda-developers
[MOD] Smaller navigation bar [AT&T-only] - xda-developers
Working with custom recovery requires an extra level of education and experience. It can look overwhelming, but it's actually fairly simple if you do your homework and gain a bit of experience. Having some prior experience with computers and working with files definitely helps.
There are many things you can do once you have root access on an Android device. How far you want to go depends entirely on your personal taste, interest in tinkering and modding, and comfort level.