[Q] mods on touchwizhome apk (to do with wallpaperchooser) - Android Q&A, Help & Troubleshooting

For original query, look below the line
I think what I wanted was impossible, so I solved this in the end by removing the option to change wallpapers from the settings entirely. All working fine now
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Heya all.
I have two questions regarding a touchwizhome apk i am using (added for reference)
- One about removing a useless button from the menu
- And one about combining it with wallpaperchooser (also added for reference)
The issue about the button is that when pressing the menu button while in the app drawer, it shows an option to launch the "galaxy essentials" app (as shown in the screenshot added).
I have disabled this app and pressing it now says "app not installed" instead. So I just want the button to go, but i can't find any xml's i can edit for this and I don't know where to look for it in the smali files.
There is one folder called menu with options_menu.xml that has the line for this menu item in it tho.
I have tried adding the tags "android:visibility="gone" android:visible="false" and android:showAsAction="never" but none of those make it disappear and removing the line entirely just breaks the menu
So any help on this would be really appreciated!
The other problem I am having is that this touchwiz launcher was designed to work with the S5 wallpaperchooser, but I am using it on a note 2 (kitkat 4.4.2) which has a different wallpaperchooser.
When I install the S5 wallpaper apk the launcher works and lets me select wallpapers, but when I try using my original wallpaper apk the launcher doesn't recognize it and just says "app not installed"
Both wallpaperchoosers can be opened via phone settings tho, except that if I try to open the S5 wallpaper via phone settings, it force closes when I try changing the lockscreen wallpaper.
Both wallpaperchoosers have the same package name (com.sec.android.app.wallpaperchooser) but only the S5 one (Called wallpaperpicker) responds to the launcher. I have decompiled and compared both, but I don't know where to look or what to change to make my original wallpaperchooser respond to the launcher in the same way.
So any help on this one would also be really appreciated
Thanks in advance

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I have messed with the wallpaperchoosers some more and found that when I installk the wallpaperpicker (the one that works with the launcher, but crashes when trying to change lockscreen wallpaper from settings) I get this error (from logcat)
Code:
E/AndroidRuntime( 8300): Process: com.android.settings, PID: 8300
E/AndroidRuntime( 8300): android.content.ActivityNotFoundException: Unable to find explicit activity class {com.sec.android.app.wallpaperchooser/com.sec.android.app.wallpaperchooser.WallpaperChooser}; have you declared this activity in your AndroidManifest.xml?
E/AndroidRuntime( 8300): at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java)
E/AndroidRuntime( 8300): at android.app.Instrumentation.execStartActivity(Instrumentation.java)
E/AndroidRuntime( 8300): at android.app.Activity.startActivityForResult(Activity.java)
E/AndroidRuntime( 8300): at android.app.Activity.startActivityForResult(Activity.java)
E/AndroidRuntime( 8300): at android.app.Activity.startActivity(Activity.java)
E/AndroidRuntime( 8300): at android.app.Activity.startActivity(Activity.java)
E/AndroidRuntime( 8300): at com.android.settings.LockScreenWallpaper.onItemClick(LockScreenWallpaper.java)
E/AndroidRuntime( 8300): at android.widget.AdapterView.performItemClick(AdapterView.java)
E/AndroidRuntime( 8300): at android.widget.AbsListView.performItemClick(AbsListView.java)
E/AndroidRuntime( 8300): at android.widget.AbsListView$PerformClick.run(AbsListView.java)
E/AndroidRuntime( 8300): at android.widget.AbsListView$3.run(AbsListView.java)
E/AndroidRuntime( 8300): at android.os.Handler.handleCallback(Handler.java)
E/AndroidRuntime( 8300): at android.os.Handler.dispatchMessage(Handler.java)
E/AndroidRuntime( 8300): at android.os.Looper.loop(Looper.java)
E/AndroidRuntime( 8300): at android.app.ActivityThread.main(ActivityThread.java)
E/AndroidRuntime( 8300): at java.lang.reflect.Method.invokeNative(Native Method)
E/AndroidRuntime( 8300): at java.lang.reflect.Method.invoke(Method.java)
E/AndroidRuntime( 8300): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java)
E/AndroidRuntime( 8300): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java)
E/AndroidRuntime( 8300): at dalvik.system.NativeStart.main(Native Method)
W/ActivityManager( 7781): Force finishing activity com.android.settings/.LockScreenWallpaper
The logcat from when i'm using the original wallpaperchooser and then try to change wallpaper via the launcher where i get the app not installed error tells me "Attempted to finish an input event but the input event receiver has already been disposed" which i guess is it's way of saying it's trying to do something, but no app is responding to it