The things that should be added in mcpe by 0.18.0 should be the following;
1)cross platform PC and PE server and realms connections
2)guardians and there temples
3)the preset layouts when creating a new world
4) the pc version inventory layout
5) the end portal
6) the ender dragon and the end dimension
7) more creative textures and modding
8) Minecraft background music while in game
9) command blocks
10) commands by chat
These are the things that should be added into PC.
Not to cause any commotion, this is just an opinion, I think mojang is only focusing on PC Minecraft and not gamer consoles and mcpe