Currently, a church in a village is made of cobblestone, is very small, and are a little boring compared to blacksmiths and houses. So what I was thinking was that churches could look like a house, but have a higher roof. There could be rows of wooden stairs for the seats, as well as a little stage and windows. Note that at night, villagers would not reside in a church, but in a house. A church could also have a chest usually containing books, bookcases, and on a rare occasion enchanted books.
A new church might liven up villages a little more, and make them look better. If you want to show support, please do so by clicking the little green arrow in the bottom-right corner, and exclaiming so in the comments. If you have a problem with this idea, please say so in the comments and I will think about changing it. If you think that this idea is dumb, I will be happy to walk over to your house and fight you. Some images provided by Jragon14:
I like the idea of slightly more intricate churches, but I don't like the example pictures you've provided. Churches aren't supposed to be twice as large as every other building in the village. That, and though spruce wood looks nice, it's out of place in the dominantly-oak villages.
Maybe just expanding the current churches by one block in each direction, adding oak wood pews for stairs, etc. Maybe adding some enchanted books and potions in a loot chest in the tower?
Also, the Church is the residence of the Priest villager, so it wouldn't make sense for him to not reside there. And, as everyone else in this thread has said repeated times, it would be highly advised to avoid adding any crosses to the Church.
As it stands, no support, though I might change my mind if your suggestion improves a bit.