There are two plugins I use for that purpose: 'PluginHider' & 'Menusort'. The combination of the two of them perfectly suits my 'need' to customise and sort all menu-items.
As both plugins have a license that don't allow us to add them to the feeds, you'll have to search a bit to find them. Once installed, just add the two folder locations (/usr/lib/enigma2/python/Plugins/Extensions/MenuSort & /usr/lib/enigma2/python/Plugins/Extensions/pluginhider) to your settings backup, and you'll always have them available.
Pluginhider adds the option to hide all plugins from the pluginbrowser. I use that, as many plugins shouldn't be used by a casual box-user. If I want to use any of those hidden plugins, I open plugin-hider.
Menusort can be used twofold:
1- To hide menu-items (like VCR-scart, Factoryreset etc). If one would like to use one of those hidden menu-entries, one can use this plugin to open them.
2- To re-order the sorting of the items in any (sub-)menu