Combined Instant Video Libraries

When you have multiple accounts in the same household, even sharing the same Prime account, you cannot combine the video libraries for each account. This causes issues when devices, such as smart TVs or TiVo, can only be linked to a single account at one time. Could this be changed to allow consolidation of libraries for linked Amazon accounts? Note: It's also a pain when you realize you just bought or rented a movie with the wrong account (especially easy if one-click is set). You can't reverse the transaction, so you either pay again or have to change your device settings.