I don't have a recent medical so no change. (As long as the FAA doesn't decide to "reform" the sport pilot rules at the same time - then hello part 103.)
As far as introducing someone - you still need to get a medical to fly without a medical, so no real change there. The benefit is for those who currently have a medical.
On the bright side, we got first in our class in the Port Huron to Mackinac race this last week end. At least I'm still medically fit to change headsails and drop the main completely in a thunderstorm (in the middle of the night) (the foredeck can be an exciting place when the stuff hits the fan) put in and shake out a reef, along with the usual head sail changes and spinnaker peels. Over the course of the 37 hours, 7 minutes and 0 seconds it took us to sail 204 nautical miles, we used the light number 1 (more than once), number 2 (more than once), .5 ounce spinnaker (more than once), .75 ounce (more than once), 1.5 ounce (once) and the code zero (more than once). The drifter, heavy number 1, and number 3 stayed in their bags. (And I didn't get much sleep.) No one got hurt, and the only damage was a tear about a foot long in the light number one.