I have three points to add to the debate:
1. The Crystal Lighthouse / Bell spire is still a good Wonder, for its boost of neighbor help - it is just not as good as it used to be;
2. This is not the first time that the design team have down-valued a game element. (For example: Down-valuing the prizes in the last Event was explained by Timon thus - he said the previous event they made the prizes too good, so they had adjusted them down again.)
Why do they do this?
It causes immense player dissatisfaction to be given something - and then to have it taken away again;
3. Why not give us extra Treasure Chests?
Three basic like now, and then one for every x amount of visits. That is the perfect solution! Because then you will get extra goods directly in proportion to the number of times you visit - and we will be back where we used to be and no one will have grounds to complain.
If the developers do not want to give away masses of prizes - there is simple solution to that too!
Re-structure the chest contents while adjusting the daily number - give lots of low value prizes liek 30 minute instants or coin rain 5%, relics, Enchantments - and add in a very valuable mystery chest at random every now and again, with something very special inside - like a 100% Instant, or a BluePrint.
That would:
1. Make the CL / BS rewards fair again and close to how they used to be;
2. Give people a reason to visit more
3. Make the daily visits more exciting!!
I hope that someone forwards this suggestion to the designers...
J