Currently the “end-game” PvP content is focused on City Sieges and Corrupted Invasions (i know the later is PvE) and eventually Outpost Rush when it is unlocked again.
The issue is: This is limited to level 50+ players, which is the minority of the playerbase. Currently they are denied access to the instanced “end-game” content. When they do hit the required level they will not be selected as City owners will prefer the established and geared level 50+
Fix: Create an instanced Corrupted Invasion/Outpost Rush for level 30-49s. This introduces those players to this type of content, so when they hit level 50 and join the serious players, they at least have the experience.
This also provides the casual players regular content. Invasions/City sieges are great for the casual player who can only play a few hours a week. But when this content is locked behind dozens of hours of gameplay, there will be a lot of players who will never see this content.