everybodys morals are different, same applies to the way people collect. These are my opinions, as right/wrong as they may be.
Here are some of mine, im curious to hear others:
dont buy from scalpers/dont scalp -a big problem, many complain but still support them
being a completist doesnt mean completing the collection at any price-Dont buy a $100 starship you dont want just to get the exclusive figure inside
open your stuff- sure they look nice in package but can be appreciated more opened, lets face it, im not selling these anyway
Dont hoard- these are toys, get one of each and be happy with that , anyone that buys >10 of the same figure has issues, dioramas or not you have a problem