The whole point of the world is to funnel people into instanced content, wherein the true PvP/PvE challenges lie (outside of pet-battles and dragonriding ofc, but even those have their own instanced stuff).
I’d love higher ilvl gear from the world, but there comes a point where you’ve gotta move on from World Quests as upgrades, only really using the “world” outside for professions and renown quests, not for the gear itself.
PvP gear? Farm bloody tokens in the world (kill players/assassins, collect war crates), then honor and conquest. The honor gear is actually better than the bloody tokens gear, when fully upgraded, UNTIL you do the new quests that just came out which award trophies. These trophies come from instanced PvP content, and dailies/weekies, and are used to UPGRADE the primal/bloody token gear into something better than the honor gear can provide, like 424 iLvL, exactly as you describe. Honor gear only goes to 411, and 366 in the overworld.
PvE gear? This is even simpler- Do normals/heroics to learn the dungeons, and then jump into Mythic 0, and onward to Mythic 1-6+ and higher, earning better gear the higher you go. This gearing path is much more straightforward. Mythic 0 gear starts and 372 and only goes up from there- already better than the 366 PvP gear you can get, at least in the overworld.
Raiding? Well, that just opened, and I’d recommend probaby being 355-60+ to start, but yeah, Normal drops 389, and the final boss drops 398. It’s very new, so don’t expect to get that gear right away, until people learn the raid first. Maybe you’ll get lucky with your vault, at least trying to do the raid.
Also, don’t forget your world boss, kill it and get some raid-equal gear or better. World Quest gear, and I assume world boss gear, scales to be slightly higher than your iLvL, up to a certain point.

