I used to have just one side line aside from my Transformers collection, which was ML X-Men (technically 2, the other was Black Series but by just collection unique Jedi and Sith, I get at most 2-3 per year)
McFarlane changed that for me, with the DC Multiverse releases. Batman: Metal, Death Metal then JL Snyder Cut. Still, with a small set of releases, consider those just filling the gap between TF releases.
Then I bought MK11 Spawn and ruined the dynamic. It opens the floodgate to many more Spawn releases.
Presenting, Raven Spawn