Currently when you input a number larger than either your bank balance or your active balance the site will simply throw an error, which is annoying if you want to take all of your funds out of the bank, or put them all in.
Thus it would be very nice if you could deposit all notes and essence fragments quickly, as well as take them out. This could be done by simply letting you "overdraw" by putting in a bigger number than you actually have, and it simply giving you what you have within that number or with a dedicated "deposit/withdraw all" button.
The safekeeping system, while being very nice is also a little clunky at times, its currently impossible to search and then perform safekeeping at the same time, as well as that going into safekeeping mode forgets what page you're on, both of this could easily be resolved if safekeeping remembered things like your search input and the page you were on.
These changes would make the safekeeping parts of the inventory whether items or notes much nicer and smoother.