Hi lyes, also another way that MoI's system gives more flexibility is that the Scene Browser works as a complement to simple individual object hiding and showing by the Edit > Hide command, rather than interfering with it.

For example if you want to hide just one particular object that you see in the viewport, in MoI you can do that just by selecting the object and then clicking the Edit > Hide command - the object will be hidden and you don't have to know or care about what layer it was assigned to.

Similarly if you want to show just 1 specific object you can do that by using Ctrl+click on the Hide button which will do a "Show subset" operation. This temporarily displays all the hidden objects and lets you pick some of them, then when you right-click only the ones that you picked will get shown. Again, that works just by picking any object on the screen - you don't have to know specifically which layer the object is on you can just show it when you want.

These are also the kinds of simple operations that MoI's system enables that don't work properly in traditional layers because with traditional layers you can't work on this individual object level whenever you want, you have to show or hide an entire layer which will affect other objects that are also on that layer, instead of affecting just the object you clicked on in the viewport.

Just being able to hide and show whichever object you want without having to worry about layers is one of the big flexibility and also simplicity gains that MoI's system gives in comparison to traditional layers.

- Michael