Maxed and 12 characters with maxed inventory. Crafting bag too. Banking is ridiculously small compared to inventory size. I have no problem with overall capacity but sorting things through alts is a big and boring chore. Not to mention bank is used as a buffer to transfer items between characters so cannot be fully utilised. I would gladly sacrifice half of the bag slots to convert them to bank space.
I don't care how others play or think this is fine as is. Storage is not a problem but bank size is. And if you think it should be enough to store all non-crafting stuff here's one number for you. Just to keep a single divines piece of each monster set piece you need 168 bank slots. Given you need some buffer, that alone almost fills all the usable space. And the list can go on for long.
Have 12 chars on main account.
All playable chars are 200.
All mules are atm about 120-140.
Bank is maxed.
Mule account has 8 chars and all 8 have at least 100 slots.
Mule bank is 200 atm.
ESO+ subscriber on main account.