Feeling punished for having alts...

[Iscah]

Neither of these will happen so long as there's profit to be made from selling bank space via retainers.

If that's the reason for not allowing sharing, I'd like to see a system (if it's possible) that lets you send items to alts at a deliberately-cripplingly-slow pace. One per week? One per month? Enough to get the really critical things passed over, but not enough to use them as storage.