Just from a pet dog perspective, not a sport dog perspective:
I plan to get Future Puppy used to ALL things vet visit/grooming/handling related as soon as possible. Restraint positions for blood draws (neck, legs), chilling out in a kennel, nail trims, ear cleaning, teeth brushing, physical exams (and all the weirdness that goes with it), being able to settle on his side if needed, being rolled over and held on his back, getting wet in unexpected places (alcohol or surgical scrub), etc., etc. Also getting used to the force dryer and baths.
After dealing with untrained, idiot dogs at work, I want my dogs to be the model patient. Cynder, Cooper, Gracie, and Chloe are all great. With Chloe and Cynder I can't blow dry their ears, and Cooper hates having his nails done, but other than that they're great. (If I'm the one restraining Chloe, that is.)
Sadie learned at a young age how to just lay down and relax when she was on lead (she had to, as she was out in public with us all the time). Chloe knows that lesson as well, and after experiencing my sister's puppy - who has NO idea how to just chill unless he's sleeping - I plan to really implement that as well.
Also, off leash recalls. Puppy will be started Day One on off leash behavior. Cynder, Gracie, and Cooper are all great off leash and I want Future Puppy to enjoy off lead time in parks and such as well.