Hot toys are cool center pieces, but they can be boring when you have a lot of them. I personally just like to get a few select main characters to represent a series. Granted, I'm biased and don't like too many live action superhero costumes. That said, I can see getting a full set of Guardians looking cool.
Get a nice, dustproof display cabinet for them..you don't want dust sticking to them. Detolfs are cliche, but they're reasonably priced and will look nice enough. You can find them at IKEA.
