Mike Moore was the first overall draft pick in 1981, and he would debut with the Seattle Mariners the following season as a regular starter.  He was 7-14 as a rookie, 6-8 in his second season, and 7-17 in his third season, all of which would see him ERAs over 4.70.  While this isn't good, Moore had good stuff, so the Mariners stuck with him, and in 1985, he would win 17 Games against 10 Losses, and dropped his ERA to 3.46.  He finished 10^th in Cy Young voting and was sixth in bWAR for Pitchers.  

Mike Cameron was the best player of the four that the Cincinnati Reds dealt to Seattle and the Ken Griffey Jr. trade.  Cameron could not replace Griffey, but he was a good player who would provide the Mariners with many positive moments.

Erik Hanson played his first six seasons in the Majors with the Seattle Mariners, where he would start 143 of his 145 Games with a 56-54 record.

Popularity wise, Harold Reynolds had few equals in Seattle.  He treated the fans well, was respected by his peers, and he gave to the community.  He was also a pretty good baseball player.