Yep CSGO is the prime example like everyone has said... just the lack of information available to me as a viewer seems to be completely lacking from Overwatch E-sports right now.
It doesnt even have to be on the level of CS:GO(which hopefully one day it will be), but just give me some information, that me as a viewer can easily follow. Id like to know how the healers are contributing to the flow of the match, Id like to know whos taking the most damage for their team etc etc.
There just isnt any interest in me to following Overwatch pros live at these tournaments right now because all the information I want isnt available until the games have already finished and people write up their reports about them.
This interview with Montecristo more or less sums it up for me.
https://esports.yahoo.com/montecristo-overwatch-vegas-mlg-030000261.html