This message to balance out the negative threads about Chewie.
I actually liked the difficulty and would like more event like this one. It's so good when you have to tweak to the extreme to have a chance of win, and have numerous tries and retries.
These legendary characters should go to people who were able to tweak and strategely use their roster enough to make it.
Ps: i'm a F2P player and I have been playing for not so long (1 year) and got chewie 7*. So it's doable. For those who didn't: keep focusing on BH and you should get it next time (mods you choose are very important).