Previous gold rooms should still work with Hercules.
If you find one that isn't working you could leave it to us so that we can give it a glance. No fixing guaranteed but we'll try
In the event that gold room allows skill usage inside, just add this line outside of the NPC:
YOUR_MAP mapflag noskill
Replace YOUR_MAP with the map in which you have the gold room and please mind the tabs since without them the mapflag won't work.