While that sounds good in theory unless you are specifically practicing hitting the changeup at 11 it just doesn't happen. Our strategy on the good hitters (typically the three or the four hitter) is to throw first pitch changeups. I have never had one of those hitters hit it for an extra base hit.
My uneducated theory is that if the change up wasn't coming in with a slight arch it would be easier to hit. Take a travel ball player and put her in a rec game and see how well she hits her first few at bats when the fastballs are slow and arching. It makes them look silly until (if) they adjust.
Just my humble observations.
An inside change to a decent hitter is that screaming line drive that bounces six inches inside the left field foul line for an extra base hit. I've honeslty never heard of targeting a change to the inside half of the plate. It takes away the advantage of what the pitch is designed to do, which is get the hitter ahead of the ball. Slightly ahead of an outside pitch = swing and miss or off the end of the bat. Out in front of an inside pitch = dead pull down the line.Why doesn't anyone want to throw the change on/off the inside corner? An inside change that misses over the plate goes just as far as an outside change that misses over the plate! Stop giving away half the plate and limiting your pitch sequence possibilities!