Back in my Märklin days, I was aware of the distinctions between epochs, but my rolling stock was a hodgepodge of steam engines, diesels, electrics and cars from epochs III and IV. When I became serious about model railroading again, I decided to strictly model epoch IV and in particular the time between 1980 and 1990. For me, it was a natural thing because I grew up during the 80s and first discovered the love for trains during that decade.
Unfortunately, it turns out that epoch IV seems to be the underdog in German model railroading and especially in FREMO. Many members of the club are modeling epoch III and there is a growing number of epoch V enthusiasts, but epoch IV people are few and far between. To make matters worse, there are even fewer epoch IV folks in FREMO:87, which makes the goal of a pure epoch IV operating session seem unattainable for years to come.
This lack of critical mass also has a direct impact on the availability of custom parts for rolling stock. I hope that I will able to contribute to improving the circumstances in the future, and by doing so, inspire others to model the underdog as well.