I've been playing now for about 4 years First on Euro and swopped to US after F2P started and still enjoy it however what I have noticed is the game is generally becoming easier and easier over the years as gear has increased in power and the various class enhancements have upped the class's effectiveness.
For example one quest series I used to love was Deleras....a full party on elite at lvl 7-8 had a decent scrap and was a fun quest...Now it's soloable with little challenge to someone of that lvl and it is a shame that like this huge chunks of the game are now walkbyable as class enhancements have wiped out the challenge.
It would be nice if from the early midgame say lvl 6 quests the difficulty of Hard and Elite are upped instead of +1/2 lvl or whatever it is now (never paid that much notice to that detail) difficulty is increased by +2/+4 or even more so that those who are new to the area can play through as is on normal but hard and elite are still a challenge in the current higher power game. Prehaps even at the high midgame lvl 14 onwards the difference is increased even further to make hard/elite setting actually difficult.