That's some real awesomeness of a custom I have ever seen.
Those are some great stuff you own, but I agree that they are cluttered together. PAK batman & joker are totoally out of place
You could use acrylic stand to help create level & dept (
https://dennis-toys.blogspot.com/2008/12/acrylic-stands.html). +putting similar things/type/serie together (ex. PAKraiden, kubrick ). Last but not least, I would sell some away - especially when I don't have a decent place to display them (but only as a last resort).
Your kubrick collection is awesome. And I like the MGS1 keychain.