I really dislike this feat. It allows any creature with greater reach than its opponent to pretty much automatically win.
...
Now I appreciate that the fighter may have other options such as ranged attacks, but if he's specialised for melee (as many fighters are) then this will negate a great deal of his class abilities (also his melee weapon will likely be far more powerful magically than his ranged weapon).
Compared to say, Weapon Focus, or even better Spell Focus, which was apparently seen as too powerful, this seems to me way over the top.