AWS needs to release a more affordable and simpler feature for inter region connectivity. Even MS Azure has a Vnet to Vnet connectivity option in which traffic flows through the Azure backbone vs the internet and it doesn't cost much.
That Vnet to Vnet is unreliable when you start using it at scale.
We had issues as soon as we started launching instances ( after connecting vnets ) , and azure supports response was to give them the ids so they can manually add them to routing between vnets.
Also BGP routing, was impossible to do beyond their tutorial level setup.
