Hi izzy,
I certainly agree with you that pillows are an important part of providing good alignment for the head and neck in a sleeping system and there are basic and common “needs” involve in a pillow choice. Beyond the basic needs in a pillow … a pillow choice also involves more individual preferences than a mattress so I don’t suggest specific pillows for anyone because each person has their own unique personal preferences of material.
Having said that … the pillow thread here has some guidelines and links to information and resources that may be helpful.
Phoenix