The gun sticking out of his head is a really odd design choice, I wonder if there's any point to that or if the designer just thought it would look cool

That's one of the best helmet designs I have ever seen. The gun is certainly a choice, but the "scar" portion of the helmet, revealing blue "flesh" underneath with a yellow eye visible - wow that goes hard.

It's also interesting that the unscarred part resembles the Gozyugers' helmets, with the ring-shaped visor

It's not a scar. It's a "shooter's scope" like Dead Eye and Deadshot have but it's just styled as a huge X across an eye. He likely can see thru things to shoot at you and the shots might be over-penetrating ones as well.

Honestly I really like how his right eye is exposed while the left side is a normal visor like the Gozyugers. Really cool.

Can I assume that Garyudo will use the zords of the Gozyugers for himself just like GaoHunter and Killer-Oh before him?

If they do decide to make him the tsuika of the show, I wonder if we'll get a TTFC prequel. I can picture him working somewhat like Proto Drive.

I’m getting “Devil Gundam” vibes out of the Ring Hunter!

I just hope Gozyu Polar has Schwartz Bruder vibes as the series still reminds me of G Gundam.

So... The "using any of the weapons of the red warriors" thing turned out to be in the show but Garyudo is the one doing it atm and the way he does it is even better lol.

Oh, and...

https://www.youtube.com/watch?v=Ji7sx--BmyM

I have been thinking about something for a few days.
Would Zi-O have been better if it did what Gozyuger is going?
I mean in having random people inherent the powers of the past Heisei leads that Zi-O has to interact with.
The Another Riders can still exist but with other people that can also transform into prior Riders like Faiz, OOO, etc.