Directionals make it much easier to defend and give you more of a chance to get on offense by giving you "Anticipation" based on knowing what shots the other player can most likely make. Here's a little tip that makes a big difference above the 3.5 level (where players have decent directional control). Train yourself to automatically cover a position crosscourt to the spot you are hitting to immediatelly after the ball leaves your racket in groundstroke exchanges. Because crosscourt is the more natural shot on "outside" stokes you will be guessing right a high percentage of the time and you will have to hit fewer shots "on the run". You also "bait" the other player to take a low percentage shot which will give you more opportunities to get on offense when they do not hit it cleanly. (COD's are harder to hit cleanly and often "sit up"). One of the biggest differences between good baseliners and not so good ones is this little distinction that is very trainable, watch some pro tape of Max Mirnyi when he's pinned on the baseline and then watch some Ferrero footage and you will see the positioning difference. Players who return to the "T" end up having to hit every decent crosscourt ball "on the run" which eventually kills them against good baseliners by creating short balls. Work on this vigilantly and your opponents will think that you are some gifted mover when in fact you are just a smarter mover.