Here's your science thread on why it's going to be exciting:
*(seriously New Horizons peeps, look both ways twice before crossing the road!)
@Super_Grover points out LINEAR-spotted asteroids Itokawa, Ryugu, & Bennu were all explored within 7-19yrs.
Another thought: Voyager had a lot of discover-during-flyby moons (as did New Horizons, which spotted 2 Pluto moons during approach), & some moons retroactively identified way later.
(I should've remembered this one, considering I wrote a freaking Ode to Charon with a whole section on discovery back during the flyby... gizmodo.com/charon-you-are…)