Aside from Galoob's Action Fleet and Micromachines, my collection has narrowed strictly to Star Wars 3.75". It can be summed up to, "What can a toy do for my SW 3.75" hobby?" I've picked up a few Hiya Aliens/Predator figs, but only so they can be incorporated in SW dioramas; eg, the Aliens astronauts as patrons for the upcoming Haslab cantina. I have a few dinosaurs from Mattel's Jurassic lines so I can modify them for SW pieces.
I've picked up a few Marvel Legends and SW Black series because I'm curios about how they've been designed, but then they get put away and not displayed
I did grab the Yoda starfighter from Jazzwares because I like the design and can only dream if Hasbro made one for TVC.