With great respect (and I do respect both you and
Abdicate greatly), your reply is to my point. You said "it draws attention unto itself", and I would agree, although I would say that it draws attention to who our Lord is.
You can not be a witness if you do not make the object of that witness known.
If the world around does not know this about the good deed doer, that he does this because of the Lord he serves, how would that aid an onlooker know the Lord any better? Otherwise, the attention that you say it draws would be to the brother doing the good things.
Again, I am not denigrating the good mannerly acts or any other acts of good citizenship. I think they are very laudable and in keeping with the dictates of our Lord. I just don't see how they teach anything to anyone else about our Lord, which is what evangelism is, unless the viewer knew that about the brother.
They may teach the brother doing the good acts a few things (like how thoughtful obedience can be joyful)