What ho,
So in the gap between expansions, people either turn to HC raiding, gouge their eyes out of boredom, or quit. All due to the lack of new content. The newest raid, while it might be amazing, obviously can't keep us interested for too long before it becomes a tedious grind.
So why not implement Adventure Mode Raiding (inspired by Diablo 3 bounties). Let's call this Raid Bounties.
- Every single raid boss in the game is placed in a random pool of Bounties.
- Example Bounties could be: "Kill Lady Vasjh" or "Win the Siege of Ulduar".
- Via the Dungeon Finder, you can search for random Bounties. You may also choose which expansions you want Bounties from (you can select All).
- The rewards come in a form of currency, which you then use to purchase high-end gear from a vendor. Easier (older) raids yield less but are quicker to complete, while harder (newer) ones yield more and take longer.
- The raid group size requirement is based on the expansion: Vanilla requires 5; TBC 10; Cata 15; MoP 20; WoD 25.
- Mythic difficulty is not available for this; all old raids are set to their highest difficulty available, while WoD raids can be toggled from Nomal to Hardcore.
- Chosen difficulty affects rewards for the WoD Bounties.
- All raids may also drop their normal loot while you do them, but with a slightly lower drop-rate to make up for the fact that you can also buy it with the currency you earn.
At the end of the day, this will give us an endless amount of raid content, all of the time. We will never, ever run into the situation where we are stuck raiding the same place for months on end. Yet, while a raid is new and shiny, it will still be rewarding to raid it like you normally would, with bounties being a thing on the side for extra content and more loot.
This system can obviously be expanded to dungeons as well, allowing us to gear up for raiding in a less linear way, and also giving up a good chance to re-visit old favourite dungeons.
Edit:
I should point out that this is one of my "off the top of my head" ideas - which means that I wrote it out of passion more than anything else. At some point, I might design a more solid concept for this, and illustrate it with an infograph.