Yeah... Looks easy. =.=
Lol, I'd understand if you meant it's easy to level and gain all the skills, but having skills under your belt as opposed to being at a standstill, repetitively using the same skills seems good. Even if the skills are passives, atleast you gain skills.
Keep in mind, in LO, dungeons really scale up especially with the hard modes, so having more skills is a necessity without making the game easy.
In alpha, the skill tree allowed for a new skill every couple levels, and was not easy.
The same system can be applied even with job changes every 15 levels.