miner villager and village city

miner villager: a new proffesion to a villager you can get him work with mining table (new block) you will need 4 stone,4 coal, 1 diamond. makes him trade coal,copper,gold,iron,red stone,diamond and would mine for example: if you have a strip mine get the villager there and place the block down after that he will start mining searching for ores that he can trade.    

village city: a new structure that would be 5x times the normal village would only spawn in plains and would be rarer to find than normal village there you can find op stuff.