the OP doesn't think someone is going to stop him from doing what he wants, he just doesn't like the fact that people might criticize him and hurt his feelings when all he wants to do is look cool on his fixie. That's too bad. He's going to the place where his most vocal critics are probably going to hang out and trying to keep from getting criticized. That's not smart. He should go over to the fixed forum and ask them. They probably will tell him the same thing, change the drivetrain but keep the frame original.
This is not the "convert you classic steel to something it isn't" forum. Someone comes in here and tells us that they are going to potentially Drew their bike, we are going to be suspicious. And they are trolling.