Apparently you have to reach Veteran rank before anything of real challenge faces you. I admit it, I only reached L15 so I am basing this off of people I have talked to in my guilds and those voicing their opinions on Youtube, but are they all lying or is the game too easy?
If it were harder people would be more inclined to group up(in so many areas in DAoC I remember you had to join up with groups) and solo'ing would be more fun as the risk of death along with its rewards would be higher. I did fight one battle which was part of the mages guild line which I had to flee against some tough Clanfear monster before killing him on my 2nd try but that is all I can recall for what would be considered 'tough' fights.
I'd be happy if they increased monster HP across the board by 25% and damage output by 10%. That might not fix the issue but it could only make things more fun.