I suspect Mythic keeps boosting the XP gains in the RvR "lakes" to encourage people to go there instead of just grinding away in instanced scenarios. Personally, I prefer impromptu skirmishes in non-instanced zones but those are few and far between (even on an OpenRvR server!) aside from the occasional keep assault/defense -- and I (still) consider myself a carebear!

I feel the XP/Reknown gains from instanced scenarios should diminish over time to discourage people from staying in them the entire day. Maybe there should be *another* Rested XP Bonus bar that is only consumed when in a scenario? When the Rested (Scenario) XP bonus bar is gone you can still do scenarios, of course, but without an XP bonus. The XP/Reknown gain from scenarios would have to be lowered too so the combined (normal+bonus) XP would be the same as it is today.