One thing that should concern Imsa was in the top class only 1 car (2 ESM) survived w/o some technical issues. I think the only issue the 2 car had that required a repair was the damaged bodywork when Pew speared them at the bus stop. The 10 nearly killed 2 of it's drivers with carbon monoxide, 90 had steering ECU and splitter issues, 5/31 half shafts, 02 brakes and I dont know what happened to the 01. Two P2 cars had engine failures, the 70 broke a flywheel and the BRO had multiple brake issues.
2017 with all new cars would have me scrambling for a used JS2 with a HPD engine and save the new car debut for Sebring.
On the opposite end of that the GTD field that wasnt designed to run on the high banks had 5 cars finish within a lap of the class winner.Only 3 GTD were classified as DNF which is pretty impressive for a new to Daytona spec of car. One thing they need to deal with next year is the top speed of the GTD's. They need to be under 175 mph to stay of out of the way of the GTLM cars.
PC and Daytona-bad combo for cars that werent built to run that style of track.
If I'm the GT3 manufacturers who participated in the race, I'd be proud. The 3 retirements weren't the brand new or debut cars. And actually as @TDZdave pointed out, all the cars in GTD have done endurance races, all except the M6 GT3 and 911 GT3.
