With Warbands, the messaging didn’t hit correctly as you didn’t say it is what you are now calling account-wide. My initial impression was it was a select set of characters on your account.
My question comes from an interview answer given on currencies for it.
It was asked about shared currencies and the answer given was you didn’t want alts to have been given the currencies from your higher level character.
This is all well and good for the current expansion but do make any new “Dragon Isles Supplies” equivalent account-wide but also,
Can older expansions have their currencies combined into a Warband currency with a higher limit if limited beforehand, up to say 5X what a single character could have.