Because that's what most people do. It's the difference between choosing to group up with someone or being forced to group up to get something done. It's a brain-dead argument really because the vast majority of the content in the game is solo content. To answer the question posed in the op, if the game were really sliding again--something that I don't think for a minute is really happening--the easiest way to bring people back (back being the operative word) is solo content. People come back and do stuff. They don't need to know anyone, they don't need to play with strangers. I'm not making a value judgement on it per se, it's just a reality.
Why do people come back for expansions? Many of them to level, see the sights a bit and then leave after a month. Solo content. They aren't staying to raid, to do +15 mythics. People will come back for content like this. Millions do every couple of years. It's just true.
"...money's most powerful ability is to allow bad people to continue doing bad things at the expense of those who don't have it."
Battle Royale. Jump right on that bandwagon.
Random zone. Drop everyone at max height with a goblin glider. Random pickups that give powerful buffs or an ExtraAction button.
By dieing it means that it does not generate a lot of money, which basically means that i do not have enough maneuverability to do things because the investors would not allow me to do so.
So the easy answer is (serious) re-release Arthas and make the entire game more casual friendly and ofc change the subscription model either make it cheaper or buy to play and buy each components of the game desperately depending on what you like.
The funny answer is start over make things more grounded in terms of lore, no cosmic destructive events, you are just a Peon after all or at best a Grunt. And ofc lots of character customization that rpg enthusiasts love.
Real answer:
Shut down the servers, claim the year as a loss, sell Blizzard to EA walk away retired.
Real talk though, I would change Legendaries to be more like Heirlooms. They work everywhere and they scale up into any level of content. Then gate them at the beginning. Design a new Legendary research table that encompasses the entire game. You would have to research to be able to use them in raids and then research for them to be at full power in raids, etc.
I would add spec specific Heirlooms for specific quality of life for each spec and an Heirloom research tree. The tree would have 2 paths: you either make your heirlooms be more beefy or you make them help you get more XP in some way, maybe bonus XP if you slay certain types of creatures or are in certain zones, something that would encourage the player to think or plan while leveling.
The big kahuna would be "unlocking" the loot tables. Creatures in the world now have a chance to drop any type of item from any area of the game within your level range, including from raids and dungeons. This would be controversial, but I can't think of anything more elegant and fun to spice up leveling in this game.
- Harder Jobs with Hardcore-Grind to get to max so you only have a handfull per Realm that can make the "good stuff" (see Vanilla)
- FF14 Like Class- and Job-Design - Everyone has every class and every job on all twinks now anyway. So whats the big deal? You could always stick to YOUR Character, not to some less important Twink-Chars. You could also make Challenges and real Achievements Class- und Job-Based because everyone could get it.
- Housing and Guild Halls
Judging from the forum posts; Let's release a WOW level editor like Warcraft 3's editor, and let our arm-chair game designers make their own games.
WOW custom maps within WOW client
what do you mean "if".
I would make an ordinary expansion, but with a twist in final raid, where on mythic heroes are defeated and all life ends on azeroth and when world first final boss kill occures, i'd announce a WoW 2 on a new engine with a new cinematic and watch an absolute shitstorm unfold and my stocks soar.
"We're more of the love, blood, and rhetoric school. Well, we can do you blood and love without the rhetoric, and we can do you blood and rhetoric without the love, and we can do you all three concurrent or consecutive. But we can't give you love and rhetoric without the blood. Blood is compulsory. They're all blood, you see." ― Tom Stoppard, Rosencrantz and Guildenstern are Dead