Not sure if this has been covered before, but probably my main thing I want in Fusion 3 is to be able to "pair" items to each other as it is in my experience the most pain to do in Fusion 2.5. Things like having individual enemies having other objects paired to them like for example their weapon in their hand (or a hat etc) as a separate item that belong to them (or just a health bar above their head that belongs to them etc). That is a major pain to do for me now in 2.5 and I have not fully understood how to do it properly. Even things like also having them tied together on the same layer etc, as if you would do anything like this now and having a bunch of enemies and their weapons one enemy could be behind another enemy but the weapon their are holding would be in front of the other enemy so it would look all messed up.
Also just curious since some of my games are "idle" games that relies on very high numbers, will the number limit be higher in Fusion 3 vs Fusion 2.5?