No, that's not what I mean. When I say change, I mean changing something that is already in the game, not adding new features. I am not talking about the additions of iron golems, new biomes, or whatnot, I am talking about the fact that Mojang has a recent trend of "fixing things that ain't broke." Every heard that saying?
Can you explain to me why we needed the color change of wool? How does it put the game forward? Other features (like new biomes or new structures or new mobs) put the game forward. Changing something that is already in the game is asking for controversy.
Most people don't use resource packs. If I am building something on a multiplayer server, I wouldn't want it to look completely different to the majority of people. Not only is it an objectively bad change (because it changes the colors of blocks people have used already in builds), but it is also an unneeded change. If we have the bright concrete, why do we need wool of the same color?
I think it was a really moronic move on Mojang's part. They change parts of a game that is already loved by many people, and then get frustrated when people complain.
I like that they finally added colored beds; that was something that should have been added a long time ago.
I don't think they should have changed the wool colors, though, for two reasons:
1) It makes some old builds look weird.
2) It decreases the variety in colors.
The concrete is also neat, but I think it's kind of what hardened-clay/stained-clay/terracotta should have been. If the hardened-clay/whatever block colors were more close to the actual dyes, the concrete would probably not have been necessary. I like that that hardened looks sort of like colored stone, and has an earthy tinge to it, though I think it would have been better if it had had a color palette closer to that of the dyes.