A quick search of shadows shows the following make use of $:/core/ui/ListItemTemplate
- Any changes thus effect these - if you are happy with that its fine.
$:/core/ui/AdvancedSearch/Filter
$:/core/ui/AdvancedSearch/Shadows
$:/core/ui/AdvancedSearch/System
$:/core/ui/DefaultSearchResultList
$:/core/ui/MissingTemplate
$:/core/ui/MoreSideBar/All
$:/core/ui/MoreSideBar/Drafts
$:/core/ui/MoreSideBar/Orphans
$:/core/ui/MoreSideBar/Shadows
$:/core/ui/MoreSideBar/System
$:/core/ui/TagTemplate
$:/core/ui/TiddlerInfo/List
$:/core/ui/TiddlerInfo/Listed
$:/core/ui/TiddlerInfo/References
$:/core/ui/TiddlerInfo/Tagging
$:/core/ui/UntaggedTemplate
I suggest consider building a separate tiddler with your modifications to $:/core/ui/ListItemTemplate and then include it with the “template parameter” in your own custom lists.