I say colored doors should work like locks. Once you shoot a colored door with the correct beam, you should be able to use any beam to open that door. If I opened an ice door with the ice beam once, why do I have to prove that I have the ice beam every time I want to go through that door? It should "unlock" to the standard blue.
Still, their system of doors works well for their weapon system. I think they split up the beams to give the player a sense of having an arsenal as opposed to just one upgraded beam, which may or may not have been a good idea for Prime. I mean, it's worked with every Metroid game in the past.
Still, their system of doors works well for their weapon system. I think they split up the beams to give the player a sense of having an arsenal as opposed to just one upgraded beam, which may or may not have been a good idea for Prime. I mean, it's worked with every Metroid game in the past.