There was a time during OW1 when every match had 10 Additional Seconds of SETUP time before a round began. Eventually there was a patch that removed these 10 extra seconds to try to make it so that, overall, there are more matches happening per hour or something. This probably makes queue times 10 seconds faster for everyone, but it’s also the root cause of (Full Bladder Anxiety that can affect the outcome of a match). Sometimes you get a queue pop and you suddenly realize you REALLY Have to Pee! It’s lucky for you when it’s on attack because you can click your hero, then RUN TO RESTROOM. Maybe you’re 10-20 sec late to the match. But if you try this same thing when you’re on defense, you’re kinda screwed. Point A will likely be taken fast 4v5 and your team will be asking “what happened, where were you?”
If 10 seconds were added to each round’s setup, It would mitigate the frequency of someone’s full bladder affecting a match’s outcome.
I currently feel like it’s quite normal for someone to need to pee between rounds, and they shouldn’t be barred from it just because they’re on defense. 
ALSO i miss having those 10 extra seconds to be evil as a junkrat and set up my spawn traps sooner on defense xD