Big WoW Strange Experiment
Lets imagine strange things:
1) You can have 4 types of gear:
a) World gear (you get that from questing, crafting, finding gear in world mobs and chests, reputation gear)
b) Arena gear (you get those from arena)
c) Battlegrounds gear (you get those from BGs only)
d) Dungeons/Raids gear (you get those from dungeons/raids only)
So you can have 4 different sets of gear and you can't mix those gear.
2) Experience from questing, arena, bgs and dungeons/raids does not stack up. So they are 4 different pools (bars). But each of those can level up you to 100 level. This means that you can reach lvl 100 doing arena only with same speed if you do questing only. You can have lvl 100 with arena and lvl 1 with questing and lvl 42 with dungeons at the same time.
3) In cities you can wear ANY gear. But in arena you can use only arena gear, in world you can use ONLY world gear, in bgs you can use only bgs gear and in dungeons/raids you can use only dungeons/raids gear. This means if you are in booty bay - with full pvp arena gear (equalent to lvl 100 character gear) and if your questing gear is equal to lvl 1 character gear and if you go outside Booty Bay into Strangletorn Valley - your gear is switched to your questing gear which is equalent of lvl 1 character gear. Hovewer your character is still lvl 100, but with very primitive gear. You can pvp in the World - but only with questing gear.
4) Questing has "no end" - in sense that it becames very hard near last levels same as dungeons/raids, arena, bgs. So questing is end game same as mytic raids - has gear that is very good and hard to get. But mostly you can solo to get it (you can solo world bosses with hard mechanic - you can't use help of more than one friend - and if you do - bosses and quests became 2 times harder).
5) Heirlooms doesn't exist here.
Now question:
Which "gear" or activity will you level first, which second, which third, which forth?
Thank you, sorry for my English lvl.
UPDATE: This is not proposal for change!! Imagine WoW happened to have this now and is still interesting.
UPDATE2: Basically I want to know your favorite activity independently of current game mechanics and how those mechanics are mixed. It is not like I want to make game like this, maybe.