Bigger Blitz Board

When I play blitz I cannot make the board bigger. The size is not that bad but it would be great if the board was larger which would let me - others - sit quite far back from the computer instead of leaning in to see.

Don't lean in, that's bad for the back.

Pull the monitor closer towards you.

Yeah. But I have a crappy desk and sometimes you don't want to move your monitor all around. Besides it is much more comfortable for me to be a little back from the computer with my mouse arm streched out instead of bent - which feels better cause I broke my wrist 4 times and it gets stiff very easily now. Can't 'they' just create a size option like with regular games?