Well, as far as I can see, this is what we have learned thus far...
1. The game will be ruined by this new change, and people will be quitting in droves. However, I've been around long enough to see lots of updates that will supposedly ruin the game and have people quitting in droves, yet that doesn't seem to have happened yet. TRANSLATION: People like to complain about change that they feel will somehow grant them less advantage than they previously felt they possessed. Often this is masked by "it makes the game too easy" comments, in an effort to look as though they are more concerned for other players. What is usually forgotten is that ALL players are affected by changes, so whatever advantage you feel you have lost, everyone else that enjoyed that advantage are losing it as well. SOLUTION: Stop the incessant complaining and adjust your game play when the new update is released. Undoubtedly, there will be some aspects you feel have become more challenging, and others that are easier. Again, remember that everyone is affected by these changes, not just you. For example, if you feel that it will become too hard to defeat your entire hood everyday and you will have a harder time getting PvP points, all the other war-mongers in your hood will face that same challenge, so you won't be "falling behind".
2. Certain buildings have now become useless, and were a waste of time and (sometimes) money. Yes, I've heard this one plenty of times too, and equally as often I've heard the complaint that what was previously thought of as a "useless" building so the player deleted it, and now they are upset because it has come around that it IS useful. The Rogue Hideout is my favorite example of this. Many players felt that the Rogue Hideout was practically useless when it was introduced, yet most will now agree that it is a very useful troop to have available. So, go ahead and delete those great buildings and whatever else you feel has been nerfed - it will give you something to complain about later.
3. GvG should have all new buildings that provide GvG-only bonuses - this makes the playing field more "fair" for smaller (or newer, or weaker, or whatever) guilds to be more competitive. Ok, here is the immediate problem I see with THIS solution: The NEW complaint will be that Innogames are a bunch of greedy money mongers, and are making it necessary to buy all new stuff to be competitive in Guild Wars when we already had Great Buildings that could have done the same thing. TRANSLATION: No matter how Innogames implements Guild Wars, lots of players are going to complain that something isn't fair about it, even though EVERYONE playing is bound by the same new rules and restrictions. Whatever it is you feel you have lost, so did everyone else that had it, therefore you haven't really lost any "advantage" you thought you had.
This is enough for now, I think.
-Sigmar