If you search the Editor install tree recursively using a text editor or find tool looking in .acl files for the word "change", you can locate the following alias:
NextTrackedChange
Which resolves to:
change_tracking_find(oid_caret(), oid_caret_pos());
Either of those could be mapped to a keyboard shortcut you are willing to "steal" from its normal function OR placed more prominently on the Find menu. Search for the "map" command for the first idea and "menu_add" for the second.