I enjoyed the race. I like both IndyCar and F1. I do miss that IndyCar is no longer "run what you brung", but given the enormous cost of that, I understand that isn't viable.
The one thing I think IndyCar should do is make those engines more powerful. That will give them something to stand out with, and make the cars even more difficult to drive. I was disappointed how much slower the IndyCars are going down the back straight compared to F1. They were 20 MPH down. I really hope they bring in the 900 hp engines I keep hearing about soon.
The race itself was fun to watch. COTA is a well designed race track giving the drivers plenty of room to race and try different lines (but I didn't like the "no track limits" rule), thus creating a lot of overtaking opportunities. That is the case even with F1 too.
The lack of a crowd at the race was disappointing, but not surprising. Outside of the Indy 500 they never really draw large crowds. I went to a race at Fontana a few years ago, and it was just as light there, (but it sure was fun to watch). I was able to find a seat right at the start/finish line across from the pits ( that would never happen at F1 race), and the tickets were 1/3 the price of a GA ticket to an F1 race. FWIW even NASCAR can't fill the stands like they used to.
Colton Herta is a very good driver, and his team pulled off the perfect strategy to get him to the front. It took some luck to get the victory, but he delivered when it counted on that restart. I'm surprised he's not in the conversation for F1 at some point. He would be a good fit at Haas, but I suspect he will stay in IndyCar where he knows he has a shot at winning every weekend, whereas in F1 if you are not in Red Bull, Ferrari, or Mercedes forget about it.
I was gutted when Rossi's strategy got screwed by that late caution. Another very talented driver IMO. Rumors say he will be at Penske next year. He's already done very well with Andretti Racing, so watch out when he goes to Penske. They are the team to beat in IndyCar (like Mercedes in F1).