I use Packer and Terraform extensively for my consulting company. I appreciate the work on trying to make Terraform/Packer testable, but I wish this tool was Go

I use Packer and Terraform extensively for my consulting company. I appreciate the work on trying to make Terraform/Packer testable, but I wish this tool was Golang agnostic and written in HCL or a markup language. The biggest concern with Terraform is that small changes (ex: changing Terraform variable names) often causes rebuilds of large chunks of resources, which when in production is scary and sometimes cannot be applied without downtime. Point being, not sure testing (expected results) is the core problem. The problem is confidence destroying and editing resources will not produce unexpected downtime (modifying ELB's, RDS, IAM, or security group's) are examples.