That would be an improvement over what's happening now, to be sure.  Still far from ideal, but in a relative sense it would be less damaging for them to stay hidden from view than for them to openly disrespect the national anthem and all that it stands for like they're doing now.

Even better would be for them to keep their damn political protests out of game events altogether, and do them on their own time.  Game events are their JOB.  It's wholly appropriate for an employer to demand employees not undertake divisive political protests while on the job.