I'd argue that having exactly the same approach each week (which will be just "I need a good stock of everything") will be much more tedious. Not to mention that the overproduction of scrolls would become much more of an issue without three weeks a cycle where they were needed in huge quantities.
Well, they of course screwed up with the bears, but in no way they needed to penalize everyone in such a harsh manner for that. If they really wanted to reduce the harm the bears done, they could just add some mechanics for the duplicate pets that each next feeding effect would be cut in half, i.e. the first bear adds 50% to troops, the second 25% and so on. Then after the next bear event, if as expected it would give the old bear artifacts, the players field would become much more levelled. But as it is now they are simply saying "hey, we noticed that some players manage to get too much for our liking with the stuff we gave them, let's take it all away and additionally penalize the most successful ones". It's not exactly a good approach to the balancing in my opinion.