As others have noted, the Commonlands Monument Site is easy to access, while the Antonican Monument Site requires you to take the bell in, travel to the nearest griffon tower, then fly towards Oracle Tower, then time it right to jump off the griffon when you round the NW corner of Antonica. It is, in short, a PITA. How about a special Dragon Attack! portal near the Antonica bell that would port you right to the crafting site? Pretty please?
The event has less than three weeks left. In terms of programming time, I think they should be working on the expansion.
Today's patch notes: A portal has been added to the Antonica docks that takes you directly to the build site.
RIP commonlands progress. Ant on HOF has now progress into stage 2 and good ways towards 3, CL is still on 1 and only moved 10% maybe ... too long of a fly now, just quicker going to Ant and taking portal