Editing model textures/map and model animations

Basically I have in mind to create a project for a while that contains game replays, good plays and such for a video but I want to edit textures, animations to stand out because I feel every LOL edit is very generic. I cannot find any trails of editing textures, maps, model animations and more. It's only for replays, wacky edits. Is there a way to edit them like CS:GO videos? Are we limited to only vanilla editing, outside league of legends files?