Account banks have been mentioned many times, alas without effect. But FC should reconsider them as it could be a source of income for FC, so worth putting some time into it. And of course a source of satisfaction for players; which is also a positive things for FC.
Disclaimer: of course I would love to have this for free… but we know resources are not infinite at the moment. (And getting upgrades like the new Subway, Temple, etc is already a wonderful thing.)
A “common bank” in which you put the items you want to share (like buff items) with your other characters of the same account could be a paid upgrade -or not- for paid accounts. And it could be a one-time paid upgrade for free accounts. Then both types of accounts could go further with upgrades.
So, It could even be a way to have free accounts pay a little something if they want to. (Yes this is evil.) Imagine all orgs banks built upon froobs characters (as AO has no org bank feature), or froobs banks for players: people will NEVER get a paid account for org banks or their personal banks. Trying to make them do so would end up in an uproar.
But I’m quite confident they would buy a one-shot upgrade, then another upgrade when needed, etc. to be able to easily move, find, and access items. I know I would for org banks (and for myself, both paid accounts or free banks).
In AoC or TSW/TSWL, players have the possibility to buy, with FC points, extra “rows” or slots for inventories or banks. (Banks and inventories are very limited there even if there is way less items than in AO, and there is nothing like a “bag” that you can put in an inventory like in AO, move, etc; the bag in AoC is just a graphic feature indicating a size upgrade.)
So, imagine the following (numbers are arbitrary for the sake of example):
Free account Paid account
Account bank at start 0 slot (no account bank) 10 slots or whatever number
Open an account bank xxx FC points or money Included, with the "10" slots above
Buy 10 more slots x FC points x-15% FC points
small deduction for paid accounts
Buy more slots etc
Players get a most-wanted feature that totally makes sense, and in reasonable conditions.
FC offers satisfaction to the Community, and makes some extra money.
As or the emplacement of the account bank, it could as well be in the right or left bottom menus (easier to program than a special steady bag in the bank as suggested by the original poster IMO, and much easier and convenient than special “legacy” terminals around the world à la SWTOR), or wherever as it would be anyhow immensely useful to manage banks content.