At this point, I think the writers definitely wanted to cause some conflict as we were nearing the last half of the season. The fans see Eric & Donna with other people, which shows how real their breakup really was, and the writers left us with the possibility of these two not getting back together which definitely made this episode all the more interesting. Other than the development and setting things in motion, this episode wasn't the best plot wise. All the plots wore thin with Eric & Donna on different dates, Red buying a car, and Fez wanting to lose his virginity. Not the most memorable plots, and most of this episode spelled filler but we did get some funny gags here. "Oh, then you should stay away from you mom then..."
Definitely the best line of the entire episode from Kelso, and it was just classic Kelso. As for the rest of the plots, there were pretty bland compared to what this show is capable of doing but still a great episode.