Top 3 things?
1. refresher of the basics (most important imo)
2. high center chest ready as #3 in the drawl stroke, instead of the side of pec #3 that i had previously known.
3. engaging multiple targets: coming to high center chest ready instead of fully extended or at low/door ready seems like it could potentially be faster and more accurate (less rotating mass to stop directly on target). More practice experience will tell, same with #2.
4. Learned a couple new drills worth remembering
5. I shoot a 298/300 on the georgia police firearms qualification (99.3%)