I enjoy OWL, they have a pretty good presentation of the show.
I think they need to improve what they do during downtime. There isn't much downtime, and usually it's not that long...but still need to make it more interesting then showing replays over and over again.
The biggest disappointment for me for the first few days is that most series were total domination by one team. There few close matches.
It's fun to see the strategies they use, but most of them are not possible in competitive, they requires way more teamwork then what you see in comp. even at the master+ rank.
The Sombra attack strategy was cool, but you saw everyone peek to get damaged a little, and run back to the hack pack to heal building Sombra's ult in matter of seconds. That is not going to happen in competitive.
What worries to some extent is people in competitive trying to replicate what they see in OWL, either hero selection or strategy, but both not working because the team doesn't have enough coordination to make it work...and then have people tilt because of it.