Well, this idea is for all of autocad products.
It would be great to be able to isolate objects separately from their layer or type.
Like, lets say you wanna isolate three objects, one line, one text and one block, and they are all on different layers.
Right now you would need to create new layer, copy/move them to that layer and then isolate it. And that's just a waste of time. So this ISOLATE OBJECT would be very helpful.