My years for the D-backs:
2019:
2004: (worst)
2002: (playoffs)
2015: (division rivals: Rockies, Dodgers, Giants, Padres)
2012:
The hardest part was picking a playoff team. I actually built a team and had it ready and then I realized that none of my 5 years were a playoff team - so I had to scrap 2018 and swapped it out for 2002. The easiest decision was 2015 as the divisional rivals. It's not hard to look at the players in the west that year and pick some studs.