Regarding your comment on updating models, are you saying you think they're updating the "pinned" models. EGT gpt4-0314?

Otherwise, I think effectively they already have what you're describing with LTS models as pinned versions, and the unversioned model is effectively the "nightly."

From what I've see in the materials, it seems like if you pay for dedicated compute, you can also have some control over your model versions.