Shadow Arena inside Black Desert was VERY FUN because we learnt how to use another classes in a fast match and.. the most important thing.. 

Shadow Arena standalone sucks because I have to press 1, 2, 3, 4, F and click to CAST SKILLS. 

I tried it standalone with my main character and I couldn't even complete the tutorial. I can't play Black Desert characters like that. I'm used and I love to play using the key combos. 

The rewards inside BDO were a great incentive to play, but.. I mainly played it for fun, even if rewards was 0 if you are the winner, I would have keep playing when it was INSIDE Black Desert, because there was really FUN there.

I loved the lobby too, we could wait the players jumping around as a Black Spirit, and.. we should find a body to enter, I liked that a lot.