I know Blizzard is looking to try to incentive group acitivity and I have thoughts on how to achieve this. But first im going to describe the problems related to this:
Combat is too easy. No reason to group because most things are solo-able, also with most quests everything is spelled out for you where a thing is or how to do a thing, theres no challenge, no thought, no competition, no fight.
Everything is too streamlined.
Most classes are similar, they challenge fights in the same ways, nothing really makes them special. There should be things easier for some classes than others. In vailla you had special buffs for many classes, rogues could detect traps, warriors had a hard time recovering from fights incentivizing food, hunters had to purchase ammo, these things were a little bit bad but it encoraged cooperation, and stimulated the economy.
The most obvious solution is to make quests that stretch across zones in a non-uniform way, imbalance gives life beauty, add resistance to damage types so you could switch specs if you are fighting in an area, maybe hire a paladin to help you fight void monsters or a mage to help you clear out a forest that is resistant to physical attacks, you don’t have to make it impossible but you could do like a 50% resistance to physical damage and 50% weakness to flame and slashing or whatever, encouraging people to carry different weapon types and or group up for a task.
Also make it so quests are not so straight forward, make us figure out stuff, dont put markers on the map for everything, make people ask eachother for help.
Also combining low pop servers would be cool, maybe a mix of like an na/european/oceanic and asian realms with auto-translation so no matter when you hop on its busy.
We are facing dead zones, and boring content loops, do some weird stuff
Add a competitve aspect like every 30 min theres a lights gambit tournament or whatever or a pet battle tournament or fighting to be koth
Theres other ideas but i’ll stop here