General question to cell arrays and structures

I have defined some sort of a 'structure' made up of numbers and matrices of different sizes. I used cell arrays to build it up. All in one nice big cell array called S.

I've put each number I have in a cell inside the cell array S, whether standing alone or inside one of the matrices of different sizes!

I think it's better to have a cell for each number when thinking about finding every number with a similar indexing pattern, e.g.

S{x,y,z}{a,b}{:}.

is just the number of type double!

It took me long to come to this Idea and I spent a while figuring out, how to put a cell array of arbitrary size in a cell of a cell array.

I used something like

 [S(x,y,z)(1:2,1:2)]={cell(1,1),cell(1,1),cell(1,1),cell(1,1)}

to define a 2 by 2 matrix inside of a cell of S, where each entry of this matrix is a cell.

Is there a better method for this preallocation and initialization?

Is this a good idea in general or is there some better ways to keep track of a lot of numbers flying around?

Is the use of cell arrays inside of cell arrays inside of cell arrays (!) a good idea?!

Thank you for your help!