So many games make reaching the max level frustrating with an monotonous xp grind etc, while Guild Wars 1 makes it almost impossible to not reach it during one of the campaigns.
I find it a bit of a shame that more games haven't tried Guild Wars' level/progression. You reach max level and distribute your stats accordingly but then it's all about gearing up and collecting the right skills for yourself and your party.
I feel like it's quite common for games to continually increase the level cap and messing up the game balance, making damage/stats incomprehensible to a lot of people (I suck at numbers).
All in all, I do not regret buying GW Reforged during this years spring sale. It's good fun. I wish more games had lower level caps like it.