I find it a bit frustrating to not know what public variables an object has or is there. Especially when the names are very long, you have to type that all yourself. So to make it shorter: it will make things easier.

Better design is to write getter and setter methods rather than use public instance variables. To be honest, I don't think this will be changed. It was a conscious decision to make completion only work with methods, and only when a key combination was pressed. Certainly if you're working at a level beyond amateur you'd want better completion capability, but then you should consider using a different IDE.