So, the original intention was for a kind of mirror game, like Obelisk creates. I know a lot of people hate those, but I for one like them because they seem to require more skill. Being cajoled into a strategy, and trying to make the best of it seems fun too me, but I understand it's not everyone's cup of tea.
I think the problem with the event itself, is that it's too cheap.
might be more appropriate. Also, there is some element of changing your strategy with this. If you played normally then it would be annoying, yes. But if you take it into consideration, investing into piles your opponents have, so they don't suddenly have 10 Lab-Moats, the event becomes better.
Maybe the reason why it seemed good is because the three of us aren't pros. If we were playing better and being more strategical we might have found that the best idea was to ricochet it back.
Now, if the event doesn't work out, which is very possible, there is a chance that it will come back later. There's definitely room for it in the next expansion which is on the table for the future. I have some ideas for it there, that use the new mechanics to solve it's problems.