SO MUCH LAG and some suggestions

I love Minecraft I will admit but every time night time comes the game will start lagging and it will stop lagging when dawn comes. Can you please fix this Mojang? Also can you add more options like mob loot, weather cycle, tile drops, mob spawning, mob griefing, and daylight cycle? Because Im tired of mobs dropping their stuff while I dont even need it. Im tired of the rain coming in while Im in the middle of building or watching mobs fight. Im hate when mobs that naturally spawn in join the fight when Im watching golems fight zombies and evokers. I hate when the Ender Dragon destroys the environment around him. I sometimes need nighttime for stuff I cant do during the day. Thats all I want can you please add this Mojang?

MadUncle08889 about Minecraft: Pocket Edition, v1.1.4