To be fair after first full day of grinding I don't see too big of an issue so far.
Glad about the option to report rank manipulation, really hope that will clean up smurfs faster than before...even thought I see daily people who defend smurfs and even hackers as long as they are on their team and provide "free RR" which is sad. People more often report for voice abuse or just to trigger someone they subjectively don't like vs reporting actual smurfs / hackers when it is blunt obvious they do either or both aka your 30+ frags per game superstars.
Back to the topic - played mainly Breach, felt fine. Yes I did keep in mind tighter timing and ability cooldown time, still managed just fine, had even some really good games.
Playing Omen and Deadlock was a bit harder as now you really can't spam signature abilities and it seemed like enemies were aware of that or just automatically pushed if abilities were not spammed in many cases throwing most of my teammates off-guard = I can't remember when I lost so many 5 man into site pushes in a heartbeat...
Long story short - so far definitely not game breaking patch.
p.s. Abbys and Pearl changes actually are very nice, especially Abbys.