I don't think we will return to diminishing XP, but we will have a dynamic XP system where you get XP in proportion to how hard a critter is to kill.
IMO we lack some big group quest, where all the group gain xp, and gain more than 1.000, but more like 10.000-20.000.
(or insta kill nerfed ;p)
fire gecko should give more.
If you want to make enemies, try to change something.
Do you mean this in a way, that at level 1, scorpions give full xp. But every level they give less xp because they are to easy to kill?
If by level 1 you mean the scorpions level, then yes.
Critters would just give an amount of xp that their difficulty deserved. If you really wanted to go killing very easy critters for tiny xp when you are a death dealing machine its your own business. Doesn't need any diminishing from player level.
No I mean it like this:You are level 1,The scorpions give full xp.You are level 2,Scorpions give 95% of their xp.You are level 3,Scorpions give 90% of their xp. etc etc (just an example)Other critters dont degrade till a certain level, and other critters never have degrading xp. That's the xp system I had in mind.