Here are my changes. I tried to keep it simple.
Caster Level changed to class level minus 3 instead of 1/2 class level (paladin, too).
Favored Enemy bonuses start at +2 instead of +1, so that at level 20 the ranger's favored enemy bonuses are +6, +5, +4, +3, and +2.
6 skill points instead of 4 (I do this for the bard, too).
Dump the virtual two-weapon fighting/ambidexterity for one real feat gained at 2nd level.