2. Have more types of armor and have them have equal protection values, take away the "wears armor because most protective" and give the players a choice in what to look like with a wide variety of armor choices with the same armor rating, like how raider armor comes in various looks but offers little protection wear as combat and synth armor has one (or three) types with high protection.
3. Color customization, as in allowing the coloring of not only power armor, but weapons, wearable armor, and settlement structures. The ability to further customize things to make them personal and allow people to run around in pink raider gear with a pink fat man.
4. Add in other power armies, which is probably the case for dlcs.
5. More settlement building options and increase the sizes, let the fan build "pre-war" like structures or even their own vaults.