I’m off Folks. I’m going to take a break off of Forums and pretty much for a long time now. So kept up with the Support of High Elves and Have a Good Day.
Pretty sure the Alliance High Elves have been bumping ugly’s since they left Quel’Thalas in the 3rd War when Anasterian Sunstrider pulled his Kingdom from the Alliance. So High Elves most certainly are able to make more… Just saying…
Arcane magic was never particularly corruptive. It was just always addictive.
It did change Dark Trolls into Kal’dorei and it did change Yaungol into Tauren…
The issue with Arcane in the old story is that it attracted the Burning Legion. Which is why the Night Elves forbid it. It’s also why the High Elves joined Dalaran to keep the humans from bringing the Legion to Azeroth - Which happened anyways.
By the time Arthas and his army of the dead turned southward, not one living elf remained in Quel’Thalas. The glorious homeland of the high elves, which had stood for more than nine thousand years, was no more.
If the Elves in question are playing Nice and just there to visit the Sunwell with zero Malicious Intent, I see no reason why to not let them in. The Island is kinda neutral ground anyways.