amazing.1. If you bought your phone from giztop or trading shanzeng, it will have Google Playstore and GBoard installed.
2. Yes, 2.5 is the latest version of the script.
3. Deep Debloat (also contains the normal scripts in it) removes more system apps, I don't recomand running the Deep script, open it with Notepad, compare the packages with the normal script, search them on the internet to undestand what you remove.
4. vivo.pem is removed with normal debload, no need to run the deep one.
5. You don't need to remove Vivo Wallet for Google Wallet to work. A vivo wallet app is removed with the normal script, but the deep one removes the system app. I forgot If I had to manually unistall it.
6. Didn't do that. Until yesterday I was using 120Hz, now I switched to 60Hz to see If I notice any difference.
7. I used ADB App Control to unistall some of the system apps that were not in the normal script but were in the deep one. With ADB App Control you can see the App Name, not just the package name, it makes it easier to understand what you are removing from the phone. Also, It will be easier to reinstall what you remove, if you realise you need it back.
8. Also, you should check the youtube video posted by trading shanzeng about Origin OS, they give some good tips & tricks on what you should / could do after you get the phone.
9. Install a different Launcher? I choose Microsoft Launcher, I like the search function more on the Microsoft Launcher then on the Nova one.
yes I watched it like 10 times. And I cant live without Nova plus. and I made a Vivo Account. Another good post is this:

Vivo Smartphones aus China einrichten - Google + Benachrichtigungen
Anleitung: Hier erfahrt ihr, wie ihr euer chinesisches Vivo Smartphone mit Google einrichtet und alle Benachrichtigungen bekommt! ✅ ➜ lesen!

lastly, does the dialer or does a chinese version of Vivo support native call recorder?
Thanks again