SQL 2012 :: Role Based Server Security

There is a STIG Check that does not allow grant "Connect SQL" directly to any logins except SQL System and the SA account. My way of resolving this is to do the following:

Step One:
We create a Server Role called SQL_APPLICATIONS – for the application accounts
We create a Server Role called SQL_DBA – for the DBA accounts
and give them direct “Connect SQL’ server permissions. MAKE THE ROLE OWNER = sysadmin (group)

Note: I think that creating a Server Role is only available starting with SQL Server 2012, but not sure. I am using SQL 2012

Step two:
I add the members (Logins - SQL & Windows) – in this case any application accounts and DBA accounts to the new roles respectively

Step three:
I remove the “Connect SQL” Permission from each Login

The first problem i noticed is that the maintenance plans failed with "The owner domainusername of job db_backup does not have server access.I am currently using a test system and wondered If you think I will have trouble with the application connecting when I try and implement on the production systems.