That's true but they could also do something really easy and give them tusk customization. Gold tips/replacements, broken tusks, carvings, piercings...lots of stuff you can do with troll tusks, like tauren horns.
For that matter, orc tusks can have some of that. They've been shown to pierce their tusks so that, maybe iron replacements/caps, broken, give them longer/shorter tusks...lots of things could just be done with tusks.
I like tusks.
Also separate troll facepaint