[LG V30 Questions & Answers] tnyeanderson:
Using the following command:

adb shell dumpsys activity service SystemUIService

I get the following output (relevant sections shown):

SERVICE com.android.systemui/.SystemUIService e253a07 pid=4604
Client:
dumping service: com.android.systemui.Dependency
Dumping existing controllers:
BatteryController state:
mLevel=96
mPluggedIn=true
mCharging=true
mCharged=false
mPowerSave=false
HotspotController state:
mHotspotEnabled=null
SYSUI LEAK DETECTOR
disabled

...

Feature state:
UNKNOWN=false
LCD_OLED=true
USB_A_TYPE=false
TABLET_GUI=false
FOLDER_PHONE=false
CONE_STATUSBAR=false
ONE_HAND_OPERATION_MINIVIEW=true
HAS_VIBRATOR=true
UNKNOWN=true
SUPPORT_ADOPATABLE_STORAGE=false
ROUND_DISPLAY=true
NOTCH_DISPLAY=false
TWO_PHONE=false
BRAND_DISNEY=false
UNKNOWN=false
KDDI_QUA=false
DATA=true
FLASHLIGHT=true
SUPPORT_BLINKING_MODE=false
HIFIMODE=true
HOTSPOT=true
INFO_CLOCK=false
NFC=true
LOCATION=true
BT=true
WIFI=true
VOLTE=true
QMEMO=true
READER_MODE=true
EXTEND_READER_MODE=true
EXTEND_BATTERY_SAVER=true
JOJO=false
DEFAULT_BRIGHTNESS_SLIDER=true
DEFAULT_VOLUME_SLIDER=false
THERMAL_DISABLE=true
AUTOBRIGHTNESS_AVAILABLE=true
DEFAULT_CONNECTIVITY_BUTTON=false
CONNECTIVITY_SCREEN_SHARING=true
CONNECTIVITY_RECEIVABLE=true
CONNECTIVITY_MONITOR_MODE=false
PLAY_FULLCHARGING_NOTIFICATION_SOUND=false
NOT_INCLUDE_INBOX_CHARGER=false
SUPPORT_SRLTE=true
DSDA=false
RSSI_WITHOUT_SIM=true
[B]WIDE_DATA_ICON=true[/B]
SCA_CB_INFO=false
VZW_SUPPORT_PCO=true
SUPPORT_MPTCP=false
SUPPORT_CA=false
KEEP_RAT_ICON_IN_IDLE_MODE=false
HEADSET_ICON=true
DYNAMIC_OPERATOR_TEXT=false
USE_OPERATOR_TEXT_IN_LOCKSCREEN=false
PHABLET=false
NAVIGATION_QSLIDE_BUTTON=true
HOMEBUTTON_NOTIFICATION=false
MLT_LOGGING=false
SINGLE_BINARY_PLATFORM=false
SUPPORT_GAME_TOOLS=true
SUPPORT_LONG_DISPLAY=true
SUPPORT_HIDE_HOME_TOUCH_BUTTONS=true
icon views: 14
[0] icon=StatusBarIconView(slot=remote_call icon=StatusBarIcon(icon=Icon(typ=RESOURCE pkg=com.android.incallui id=0x7f0202b1) user=0 ) notification=null)
[1] icon=StatusBarIconView(slot=otg_mouse icon=StatusBarIcon(icon=Icon(typ=RESOURCE pkg=com.lge.systemservice id=0x02020865) user=0 ) notification=null)
[2] icon=StatusBarIconView(slot=otg_keyboard icon=StatusBarIcon(icon=Icon(typ=RESOURCE pkg=com.lge.systemservice id=0x02020863) user=0 ) notification=null)
[3] icon=StatusBarIconView(slot=rotate icon=StatusBarIcon(icon=Icon(typ=RESOURCE pkg=com.android.systemui id=0x7f080629) visible user=0 ) notification=null)
[4] icon=StatusBarIconView(slot=headset icon=StatusBarIcon(icon=Icon(typ=RESOURCE pkg=com.android.systemui id=0x7f0805ed) user=0 ) notification=null)
[5] icon=StatusBarIconView(slot=data_saver icon=StatusBarIcon(icon=Icon(typ=RESOURCE pkg=com.android.systemui id=0x7f0805e5) user=0 ) notification=null)
[6] icon=StatusBarIconView(slot=managed_profile icon=StatusBarIcon(icon=Icon(typ=RESOURCE pkg=com.android.systemui id=0x7f0805f4) user=0 ) notification=null)
[7] icon=StatusBarIconView(slot=cast icon=StatusBarIcon(icon=Icon(typ=RESOURCE pkg=com.android.systemui id=0x7f080543) user=0 ) notification=null)
[8] icon=StatusBarIconView(slot=location icon=StatusBarIcon(icon=Icon(typ=RESOURCE pkg=android id=0x02020702) user=0 ) notification=null)
[9] icon=StatusBarIconView(slot=bluetooth icon=StatusBarIcon(icon=Icon(typ=RESOURCE pkg=com.android.systemui id=0x7f080544) user=0 ) notification=null)
[10] icon=StatusBarIconView(slot=tty icon=StatusBarIcon(icon=Icon(typ=RESOURCE pkg=com.android.systemui id=0x7f080662) user=0 ) notification=null)
[11] icon=StatusBarIconView(slot=zen icon=StatusBarIcon(icon=Icon(typ=RESOURCE pkg=com.android.systemui id=0x7f0806a1) user=0 ) notification=null)
[12] icon=StatusBarIconView(slot=volume icon=StatusBarIcon(icon=Icon(typ=RESOURCE pkg=com.android.systemui id=0x7f080620) user=0 ) notification=null)
[13] icon=StatusBarIconView(slot=alarm_clock icon=StatusBarIcon(icon=Icon(typ=RESOURCE pkg=com.android.systemui id=0x7f080531) user=0 ) notification=null)
icon slots: 35
0: (remote_call) StatusBarIcon(icon=Icon(typ=RESOURCE pkg=com.android.incallui id=0x7f0202b1) user=0 )
1: (otg_mouse) StatusBarIcon(icon=Icon(typ=RESOURCE pkg=com.lge.systemservice id=0x02020865) user=0 )
2: (otg_keyboard) StatusBarIcon(icon=Icon(typ=RESOURCE pkg=com.lge.systemservice id=0x02020863) user=0 )
3: (dmb) null
4: (felica_lock) null
5: (answering_memo) null
6: (rotate) StatusBarIcon(icon=Icon(typ=RESOURCE pkg=com.android.systemui id=0x7f080629) visible user=0 )
7: (headset) StatusBarIcon(icon=Icon(typ=RESOURCE pkg=com.android.systemui id=0x7f0805ed) user=0 )
8: (data_saver) StatusBarIcon(icon=Icon(typ=RESOURCE pkg=com.android.systemui id=0x7f0805e5) user=0 )
9: (managed_profile) StatusBarIcon(icon=Icon(typ=RESOURCE pkg=com.android.systemui id=0x7f0805f4) user=0 )
10: (ime) null
11: (sync_failing) null
12: (sync_active) null
13: (cast) StatusBarIcon(icon=Icon(typ=RESOURCE pkg=com.android.systemui id=0x7f080543) user=0 )
14: (hotspot) null
15: (location) StatusBarIcon(icon=Icon(typ=RESOURCE pkg=android id=0x02020702) user=0 )
16: (bluetooth) StatusBarIcon(icon=Icon(typ=RESOURCE pkg=com.android.systemui id=0x7f080544) user=0 )
17: (nfc) null
18: (nfclock) null
19: (tty) StatusBarIcon(icon=Icon(typ=RESOURCE pkg=com.android.systemui id=0x7f080662) user=0 )
20: (speakerphone) null
21: (zen) StatusBarIcon(icon=Icon(typ=RESOURCE pkg=com.android.systemui id=0x7f0806a1) user=0 )
22: (mute) null
23: (volume) StatusBarIcon(icon=Icon(typ=RESOURCE pkg=com.android.systemui id=0x7f080620) user=0 )
24: (wifi_calling) null
[B]25: (wifi) null[/B]
26: (cdma_eri) null
27: (data_connection) null
28: (phone_evdo_signal) null
29: (phone_signal) null
30: (battery) null
31: (alarm_clock) StatusBarIcon(icon=Icon(typ=RESOURCE pkg=com.android.systemui id=0x7f080531) user=0 )
32: (secure) null
33: (clock) null
34: (volte) null

What is

WIDE_DATA_ICON

? Could this be the "feature" I am looking to change to hide the extra 4G icon? Is there any way to edit these feature states through adb without root? Also, some of the "Icon slots" (like volume) have definitions for their icons, while some (like wifi) are null. Could I redirect this to another icon in some way?