The LDS do not disagree one does not have to do works to be SAVED!
But the LDS do believe we must allow the Lord to edify us and we exercise to strengthen our abilities that Lord gave us by obeying his commandments by doing the Lords work in righteousness and that is only achieved when we are in the spirit of the Lord.
The Spirit of the Lord is something you cant always see, or smell or taste when doing his will, but will feel the warmth of the Lord when a job well done!
Sounds good to me. I'm with you on this one.
I might just add that we cannot perform any work of ourselves that would bring us salvation. It is only through Christ that we may receive such. However, Christ having purchased us, it is also His will and His prerogative to set the terms of our debt that He now owns. He has commanded us to do many things. There are principles, ordinances and covenants that we must receive and enter into to be acceptable before Him and to enter into His kingdom and into His presence. Faith, repentance, baptism, and the reception of the Holy Ghost are among them.