FYI. A fact most people today don’t remember but Brees was a great athlete. I saw the game where he spiked the football over the 10 foot high GM crossbar. I looked it up to make sure and it was 2010 at Sun Life stadium. There are articles from Gruden and others regaling his athletic abilities.
I don't think the XFL will necessarily help his position look at Phillip Walker, he is killing it in the XFL but never could get past practice squad, or on the roster for a substantial amount of time.
I think him doing so great is more of a reflection of the difference in talent between the NFL and XFL then it is him.