HeyGen for creating investor update videos - professional enough?

Hey everyone 👋

So, I've been deep in the weeds of developer tooling for years—obsessing over the perfect linter config, the ideal language server setup, you know the drill. But recently, I've been pulled into a different kind of "tooling" conversation: creating content for investor updates. My team is exploring using HeyGen to turn our dry monthly metrics and progress reports into short, engaging video summaries.

The promise is obvious: save a ton of time versus recording ourselves, and get a consistent, polished look. But my internal "code review" brain is kicking in hard. When you're presenting to investors, the stakes for professionalism are incredibly high. A weird lip sync, an unnatural cadence, or a slightly "off" avatar can undermine credibility in seconds.

I'm curious if anyone here has put HeyGen through its paces for a similarly high-stakes, external-facing use case. I've done some initial tests:

**What seems promising:**
* The avatar quality in their newer models is definitely a step up from some older platforms. The "studio" lighting look is consistent.
* The ability to script everything and generate multiple takes is a huge productivity win. It's like having a linter for your video narration—fix the script and regenerate.
* The customization options for backgrounds and basic branding (logos, text) seem adequate for a simple update format.

**My specific concerns / where I'd love to hear your experiences:**
* **Voice & Sync:** Does the premium voice library sound genuinely natural, or is there still that subtle "AI" cadence that a savvy listener might pick up on? How's the lip sync on their more realistic avatars?
* **Professional Boundaries:** Have you found the output to be appropriate for a formal investor audience, or does it still feel more suited for internal training/communication?
* **Customization Limits:** I'm used to tweaking every detail in my IDE. With HeyGen, if you need a very specific tone or emphasis on a particular word, how frustrating is the process? Do you end up doing a hundred takes?
* **The "Uncanny Valley":** Is there a particular avatar or style you've found that works best to avoid that slightly eerie feeling?

Basically, I'm trying to assess if HeyGen is a "production-ready" tool for this context, or more of a "prototyping/beta" tool that might still carry some risk. Any workflow tips, avatar recommendations, or even pitfalls (like certain words the AI always mispronounces) would be incredibly helpful.