Personally, I'd feel it unfair if a portion of my bitcoins would have taken to compensate those who lost fiat, because I didn't even trade on the site. Maybe if I was actually using the site, I'd think differently, but that I deposited BTC hours before the site closed doesn't make me feel part of it enough to be willing to share losses.
you deposited to the site to trade it within 0.5 - 4 hours , if not then you are crazy to deposit and parking your btc at an exchange
so if the site was closed after 4 hours after you traded and had no btc i think you would change your mind
so it is bullshit to name a specified time when the site was closed and you get back all btc 100% and all fiat lost