You made some great points about the ROG phones' network limitations. For such a premium gaming phone, better connectivity should definitely be a priority. Hopefully, Asus listens and improves this in future models!
Asus usually does a great job with ecosystem integration, especially with their unique features. It’ll be interesting to see how well the ZenFone 12 Ultra syncs with your Zenbook Duo! Have you noticed any specific integrations so far?
