The Wordsmith's Forge

I suspect a lot of powers can be used for show/threat display, even if they're not traditionally flashy.

Telepaths just have to lift things an inch or two, then drop them in such a way as to make an emphasis.

Anyone with voice powers just has to infuse a tiny bit of 'pay attention' into what they're saying.

Flashy ones...fire, electricity, just fidget. (Safely!)

And I'll bet some villain primals play up their less-than-human traits. (Threat-yawning with fangs? Flexing claws? Yup.)