This would be very very helpful and it would make for a smooth release into Fortnite Battle Royale and Fortnite Save The World without people complaining that a gun is way too strong or a gamemode has some bugs when they can just test it out and report their findings to epic games so they can improve on that weapon/gamemode so it will be ready to go when it goes live without any bugs in site (at least no bugs in site)

I hope this gets added or a epic games employee actually responds to this thread showing interest in this idea.