Global sounds effects and their presence in-game.

With the introduction of a reborn Sion, I was pleasantly surprised to see that his ult has a global sound tied to it. We already have the likes of Nocturne's paranoia, yet I had imagined this sort of implementation had been discontinued. So, is this something that we can expect to see more widely introduced in the future? And, if so, what are some ideas for possible implementation?

Personally, I like the idea of widening the scope of global sound effects and how they could potentially serve to create a better narrative throughout the game. For instance, global sounds accompanying the initial spawn time of big objectives like Baron and Dragon would serve purely for an increased sense of atmosphere and grandeur whilst also relaying important information that is currently unattainable without knowing the spawn time. Imagine laning against your opponent when you suddenly hear this almighty roar as you see an incredibly large shadow pass over your lane, the flapping of wings and spewing of fire letting you know the dragon was about to land on the wall of its pit. Also, picture hearing a slow rumble as the cracks slowly form up the river, only to have Baron run through his normal spawn animation further up.

Ultimately, I think that global sound effects can have their place within the game apart from just being global skill identifiers. I believe there is a great opportunity to further project the idea of a living, breathing Summoners Rift that, whilst housing mystery and magic, is a terrifying battle ground of legends. What are some of you opinions/ideas regarding the possible further incorporation of map-wide sound effects and how would you see best to utilise them in order to add to the atmosphere of Summoners Rift?