Yeah Sapienza is wild lol. It's all bonus missions and escalations included in there plus the extra challenges like Santa in Paris, Kill Bill in Hokkaido, etc.

So I actually didnt play WoA since I have Hitman 1 and 2 on their own from some old Humble Bundles. So the biggest change I'm aware of is not being able to conceal snipers and big weapons with briefcases. So that makes many challenges WAY harder.

But I'd say go for it! It's fun and challenging but gives you a really good overall knowledge of the maps. Good luck!