Your proposal has merit and could be worth exploring further. However, it's important to carefully consider the potential benefits and drawbacks of any major changes to the development process.

it's worth noting that there may be some potential challenges and trade-offs to consider. For example, self-hosting a Git instance may require more resources and maintenance compared to using a hosted service like GitHub. Additionally, transitioning to a new domain and registering on a new instance may require some coordination and communication with developers, and could result in some initial disruption or confusion.