The potential for Visa issues should have been the very first thing considered, so the clubs invited can make a decision based on all the facts. If DD was told the Broncos were being invited to play the Vegas round but might be without Haas and Walsh, it gives him the chance to say no thanks.
Outside of it just being a bad idea (as that is a matter of opinion) the glaringly obvious issue here is the whole thing has been done in a huge rush. The day it was announced my first thought was 'dumb idea' and my second thought was '"What? 2024? Did I hear that correctly?" The timeframe simply doesn't allow proper planning and due diligence. The day it was announced it should have been announced for 2025.
And yes, I definitely can and will blame the NRL for this.