LSP is quite a life saver for me, I created https://github.com/juliosueiras/vim-terraform-completion first, but when terraform 0.12 came out, I move on to LSP implementation https://github.com/juliosueiras/terraform-lsp , since I wanted all editors to able to use it, and the biggest benefit is that I can use Terraform's HCL2 Parsing to parse the code, instead of using other languages