Is this inactivity you’ve seen from your first season? It’s true there’s no substitute for good owners. I have a long running Ottoneu league that has always been top heavy but it has such an excellent base of engaged owners that it continues to be my favorite.
This community is probably good resource for recruiting the most active, engaged Ottoneu owners this off season.
The coupons in @Brinksmanship have been pretty successful this year, I think, but we also have very good owners there as well.