Bring back 1 sided decs.  

War breaks out, guild A decs guild B.  If guild B does not return the dec a "war score" end point is set.  If guild B returns the dec there is no end point and it goes until either guild cancels the war and then the "war score" end point starts.

Condition A.  If neither guild kills each other for 48 hours the war auto cancels, no rewards given out.

Condition B.  Guild wars are given a "karma total" to the declairing guild, killing players too drastically lower in gear score lowers the guild karma by certain amount and does not add a point to the war score total.  Killing a member of the opposing guild that is close in terms of gear score raises the guild's Karma, but adds 1 point to the war score kill count total.  Getting killed by a member of the other guild adds 1 point to the war score total in the death column regardless of the gear score difference and does not change the declaring guild's war Karma.  

The guild war would end when the War Karma runs out or there is 100 point difference in kills versus deaths on the war score, or when the declaring guild cancels the war.  

If a guild loses a war dec they can not declare again on any guild for 24 hours, and can not declare on the guild they decced for 2 weeks unless the war at one point was mutual.  If a guild wins the war dec, they can not dec on the guild they decced on for 2 weeks, but retain their ability to declare on other guilds, unless the war was mutual.  If a guild runs out of war karma forcing the war to end they lose the ability to declare for 2 weeks unless at one point the dec was mutual.

Winning a guild war provides every member of the guild that decced 100m.  Winning a war  you were declared on gives every member of your guild 300 million silver.  Losing a Guild war that you were declared on gives the losing side 100m silver to every member.  Being declared on, and the other guild runs out of Guild Karma, every member of the guild gets 200m silver.  Mutual wars 500m silver to the winning side, and 300m for the losing side.  Once receiving a silver reward for winning a guild war a guild can not get silver rewards from that guild for another 2 months.  Losing a GvG via Karma would subtract 1 billion silver from the declaring guild's coffers, or 500m silver if the war was cancelled after expending 50% of the war karma.  A guild can now go negative silver in their guild coffers.  Any war that auto cancels due to inactivity is treated as a draw, if the total kills/deaths is greater than 50 the silver rewards are split evenly, if it is less than 50 only the declared on side gets rewards, mutual wars that have less than 50 kills net nothing and lock the silver rewards for 2 months.

This would mitigate the 1 sided griefing, because it's hard to grief someone by throwing silver at every one of their members, while promoting GvGs with equal skilled guilds, and provide an actual reward for winning a guild war.  You can now earn silver, not much but some from GvGs, with cool down on the silver rewards it would prevent guilds from just farming each other for the "reward".  Since there is a large silver reward increase for mutual wars, there is an incentive to accept wars between guilds.  

2 week CD on guild decs is pointless for combating griefers. No point.

Leaving the details aside (those would need a lot of work), there are two concepts presented in the OP that PA should have taken care of when changing the GvG: some incentive for accepting a dec, and some sort of rules/rewards beyond just free-for-all.  A sort of NW lite? Not sure. Interesting, anyway.

Guild wars are definetly ain't intended to print silver.

2 week CD on Silver rewards, the ability to redec is something that could be dealt with as long as it wasn't just weak player farming.  As for no point, the point is to try and find something anything worthwhile as far as PvP goes.

 Open World Node War is more what I was getting at, but yeah taking some of the reward from node wars and adding it to the open world.  Only without the sieging of the "stick". 

Less than 1 hours worth of grinding is hardly "printing silver" and why can't players make silver via PvP?  Node wars, Negative silver, Sieges, negative silver unless you win, then you break even.  RBF even if you win you are negative silver.  Why are people so afraid of letting other players progress via PvP?

Neither NW nor siege is negative money rn tho. They are actually decent now.

Giving money for guild war would be nosense, heck in every other game it's actually the opposite you have to pay to even start and keep them up. (Which btw would be the correct way from PA to handle the situation.)

The only thing your suggestion would result in is mass exploiting, hence it will never be added anyway.

They both are negative silver.  You get 300m for a win in Node wars?  Node wars take 2 hours, you could have made double that in half the time at any grind spot, and you haven't taken into account the elixir's/draughts used.

Siege takes 4 hours, unless you win you come out massively behind after you factor the sheer number of elixirs/draughts you have to pop, not to mention the tent/church buffs used.

Siege and node wars are not even close to profitable.  

Do you even know what the word "profitable" means? Also why do you fel 100m would be "profitable" while 300m is not?

Who said profitable?  I didn't say profitable, I said it would still not be "profitable" or a way to print money.  It would at best be an offset, a way to make a tiny bit of silver, heck I would be surprised if after a GvG 100m silver payout wouldn't be a net negative after repair, buffs, and elixirs/draughts are factored in.

You said print silver, I did not.

The main concern is exploitation. What about the system you proposed prevents me from making a bunch of shell guilds to dec my own guild once every two weeks letting the decs auto end due to inactivity, and raking in free money for every person in my guild?

P.S saying something is negative silver because of oppurtunity cost is silly. It's just not a healthy way to look at the game.