Currently, in iRO classic the skill tree looks something like this: http://vignette2.wik...=20150301030713
This skill tree doesn't allow resetting of "learned" skill if you made a mistake IIRC.
Suggesting to turn it into the Skill Tree 2: http://vignette4.wik...=20150228221639
that allows resetting if you put the wrong skill. Not only that, but it also automatically puts a point in the skills that you need to have first before learning that skill (E.G. Putting a point in body relocation instantly puts the points on EF 3, Spirits Recovery 2, Steel Body 3, assuming you have enough skill points)