My son's main motor planning issues concerned his speech. He received private speech therapy from 18 months to age 4 and still goes back for a tune up now and then. He has some minor motor planning issues otherwise, and we did OT for about a year for that plus sensory issues plus fine motor skill deficiencies. Didn't see any improvement, though his motor planning issues weren't a huge focus because, so far, they don't really affect him (and he has other things that do so we choose to focus on those). He's almost 5 now.