What will happen to SQL Service Account when SQL Server is uninstalled?
Are we going to need to request for a new Service Account to be created for the SQL Services of the Developer Edition?


You can re-use the service account, assuming you know the information or can reset the information (password, for example) if it's not known. Managed Service Accounts (MSA's) can be re-used on the same server, but if moving between servers or renaming servers would need to have their metadata changed in active directory and uninstalled from the previous server, first.