I wonder if Automount section (/mnt) could have explicit 'noatime' check-box (right in web gui), to ensure flash-wear protection for usb pendrives (I don't think it needs much coding, meanwhile it would be a very nice, user-friendly trait). To me, it's the only reason to prefer self-written scripts to automounting now.
There's also a cross-topic discussion here on automatic spindown scripts for different kernel versions. Probably, Spindown option with custom timeout could also become a real pearl of Tomato USB sometime.
Thank you for your consideration.