I have a animations heavy game: download size atm 35mb, hardly any aduio yet, and half of the graphics in.
In the begnning i used one layout with all my assets ... but this grew big ... up to a point where it said memory usage 160mb.
I came to find out this indicator is the largest amount of memory any of my layouts use.
So I took a deeper look and found that splitting the pbjects layout for assets into smaler, worked very well.
So now I have an objects layout for my player chracters, I have a layout for soley enemies characters and animations, and have a decicated layout with Level props and items.
Download still 35mb, but max memory usage dropped to around 80mb !!!!
In short, the memroy usage indicator isnt a realiable measurement for memory usage, but more an indictor what the size of the largest memory iis from your layouts. (values indicates one layout)