Regarding improvements needed in Spacelift, it's difficult to say because I have been using it for a while now and haven't seen many areas where I would want to see something new because much of what I missed at the beginning has actually been added. The engineering team behind Spacelift is very responsive whenever I submit a feature request, and there's a very good chance I would see it within the next year, which has been the case a couple of times for me. Perhaps the learning curve could be a bit steep if someone is completely new to Spacelift and only has experience with plain Terraform. Apart from that, perhaps some cost visibility of the infrastructure would be interesting to have, unless it's already there and I haven't seen it. I would add about the needed improvements that a reporting solution where I could click through my stacks and see the costs driving my stack, such as whether it's the database, the sizing, or the VM types being used, could be an interesting feature to have.
