Good morning, dear players!
Let me shed some light on this Tournament for you.
First of all, we are not planning to cancel it. It hasn't been launched yet, so right now you can only imagine how it would look like. However, your feedback after the Massacre will be extremely important, and I would like you to share it on Forum:
1) What you like about the Tournament.
2) What you don't like and why.
3) Your ideas for Tournament improvements.
Now let's discuss the points highlighted in your original post:
1. It is coiners based
This event is not for single players, it's for Leagues. It will require coordinated attacks and a lot of efforts to take down your biggest enemies. Some Leagues may want to capture as much Beacons as they can. However, we shouldn't forget that they will need not only Offense to do that, but also Defense to hold them. And a lot of it.
2. It will destroy the game
This Tournament was designed to add some action to the game. In most cases players don't attack each other's Beacons, because Units are destroyed permanently. This Tournament gives you a chance to have some fun without huge losses.
3. It favors leagues oriented on offense
As I said above, you can't succeed in this Tournament if you're just oriented on Offense. Once you (your League) capture the Beacon, you need to hold it. And you will need a lot of Defense to do that. Other Leagues may also want to recapture your Beacons, so without Defense you can just kill someone's Units, but don't change your League's position on the global Map.
Moreover, both: Offensive and Defensive players will be able to restore 90% of their losses for free after the Tournament.
5. We just don't want it
Just give it a try. You haven't participated in it yet. Maybe you'll love it!