I gave up on my Hasbro action figures decades ago, for some time already I only collect what I can display on shelves. No place to put it, not buying it, this goes for statues, busts, 1/6 Hot Toys figures, props, helmets, models/studio scale etc. The only exception is the Action Fleet, which has been very close to my heart, and have most of it in storage and not interested in selling that collection for now. Despite the new Jazwares line called Micro Galaxy Squadron appeared not very long ago, in a way similar to Action Fleet, I only got a handful of pieces from this line, and stopped almost completely in acquiring more.
The same with high end statues, 1/6 Hot Toys figures, props and helmets, I stopped almost completely in buying more. I'm in that phase of collecting I call ZEN COLLECTING, where I'm happy with what I have, and except one or two items a year, I don't intend to buy more.
Still I do collect some vintage diecast tanks, made by Solido (Verem) in the 60-90's, which I liked because of the metal tracks that are fully functional like real tanks, but slowly I'm completing that collection too. From Solido I only collect WW2 tanks and weaponized vehicles, no other tanks, trucks or vehicles.