i want realistic sized buildings and units
Look at the Alpha screenshots for WC3 and you will see that they had realistic sized buildings and units. They had build-able walls and gates too. I'm not sure why they decided to go in a different direction. However, I would like to see realistic sized buildings as well for WC4, but I don't think they will do it.
Note warcraft 4 wont happen for quite a long time.
Of course it won't, but that doesn't mean we can't talk about it until it does.