There's a reason why Redskins fans have always said "the most popular person in Washington is the backup QB"
It's been that way for 50 years. And the OVERWHELMING majority of the time, the backup does not end up being better than the starter.
It's not all about the actual players either, you have to believe the people making the decisions, are good decision makers. Rivera and co don't exactly have a sterling history in that sense. If we were to put Heinicke in, does Turner change the offensive gameplan to suit Heinicke's talent? Heinicke is a short, athletic QB with a minus arm. That would scream to me, a lot of roll outs, boot action. Does Turner do that, or does he force feed the same offensive scheme we're running now? Does he want Heinicke to be able to make that 50 yard rainbow throw to Dyami Brown? Does he ask Heinicke to throw that same out route that requires plus arm strength? I'm sorry but I don't have a lot of confidence in that, because we're yet to see him do it for any other QB in this system.