interesting comment... what are you doing with base models? Are you a "finetuner"? I have been trying my hand with finetunes on instruct models and the results have been ok, but not awesome. I have a base model downloading now to give that a proper shot.
I'm not them but I still prefer a text completion style of prompting rather than a baked in pre-prompt structure assuming only a 'chat' style metaphor of interaction.