Optimum Realism 128x
This addon is a resource pack called Optimum Realism, which aims to make Minecraft look more realistic while still being friendly for performance (FPS).
Faithful 32x resource pack
Faithful is a popular resource pack for MCPE, that improves the experience you get with classic textures.
Trailer Graphics pack
Did you ever notice that the graphics in the Minecraft trailers for updates are very different from the actual in-game visuals?
Simple Controls addon
For those of you who play Minecraft PE with touch controls, you know how intricate they can be, but they can be fixed.
ENBS shader
ENBS shaders are a popular choice for enhancing the visual experience of Minecraft on Android devices.