The only way to up the filesize is if TT splashes more cash out on this website, but understandably TT can't because he's kind enough to let us use this website for free which means there is no income on the site.
Now, if the members of this forum all donated, let's say, $1 to thi website then maybe we can up the filesize a little bit.
Long story short, We can't due to low funds.
(I hope I gave you the right answer or an answer that is remotely useful, if not, sorry! 😛)