I was thinking that it would be nice to be able to enter Wilds areas at lower levels than they are current set to, so I thought up a way to implement it.
First TR lowers required character level for entrance by 1.
Second TR lowers required character level for entrance by an additional 1.
Possibly with your first Heroic class Completionist, first racial completionist, first epic completionist and first Iconic completionist each lowering it an additional 1 level.
Also perhaps making VIP lower it an additional 1 level.
This would cause wilds area farming to be a strong source of quick XP per minute and I would expect increase the purchases of slayer boosts dramatically, while also lowering free store point gain, which I feel is a strong, optional point of revenue incentive.
When I brought this up to my guild, someone suggested it also apply to quests.