1. A storage bag for housing items available on all characters - similar to how the crafting bag works. Some of us have thousands of housing items, and have to use separate houses purely to store all the items we're not using in our main house, in addition to coffers, bank slots, and mule toons. @ZOS_GinaBruno I've been asking for this for a long time. I hope someone is paying attention ;-)

2. Sky shard item upgrade such that only your own characters can automatically collect the sky shards from each zone. This should probably be tied into the achievement vendor from each zone's completion.

3. Lore book item upgrade such that only your own characters can learn lore books that they don't already know from the house. Perhaps make a new house in a mage's guild pocket dimension where this would work. Having sought after all the lore books on 9 characters, doing it on a 10th character is really not something I'm looking forward to. In doing this, mage's guild skill line would be made account wide for those who don't want to spend the time repeating the same "run around the map for 15-20 hours" activity.

4. Undaunted bust and trophy upgrade such that only your own characters can gain undaunted skill line experience by interacting with each trophy and bust gaining undaunted skill line from them. We would still have to do the dungeons for skill points and gear, but the skill line itself would thus be made account wide for those who don't want to spend the time grinding and who don't need all the dungeons on a given toon.

5. Something similar to the above for Fighter's guild skill line.

6. A Psyjic portal item similar to the above for Psyjic skill line.

7. A glass topped table with all the special stolen items from the thieve's guild line that you can place in your home that give you the thieves guild skill line.

8. A book on a pedastal (or some such) similar to the above for the dark brotherhood skill line.

Note that none of the above prevent you from doing the quest lines, and you do gain benefits from doing them (skill points, etc), but for those who complete everything once and don't want to do so another 11 times, this lets them enjoy the game as they want to play without having to grind continuously for 50-80 hours on each character. That time could be spend having fun, rather than grinding and getting ready to have fun.