Destiny engine (Tiger engine) is documented to be very slow to create content on, creating a Destiny experience on a better engine could be better. The issue is Bungie directed their focus and resources to Marathon and is risking the company’s future on it. Destiny 3 has no development on it & would take years to make if you started today given current AAA development time. If Bungie survive, I wouldn’t expect a D3 until the next generation of PlayStation at the earliest, with PS5 being stated by Sony to be roughly halfway through its life cycle. Unfortunately, Bungie made a lot of poor business decisions that could result in its closure.