I don't think we're supposed to post video links here, but 'The Flight Crew' on Youtube has about the best on the ground look under the lens of a local young mom with a child, who is also familiar with Disney/Universal parks. She gave a very fair look at everything, explained her biggest critiques (lack of shade/AC, lack of indoor rides, things needing more paint/color, etc), and ultimately concluded that she'd go back but not in the heat of the summer.
She also mentioned that the surface of a ride vehicle or two were so hot to the point they were painful and TMs were spraying water on them to cool them down. That's shocking to me. Universal never though this through or tested out how hot the seats could get being out in the sun all day? We're not even at the hottest part of the year yet. She also commented on the over-reliance of spinning rides and how it limited what she'd do with her kid but I guess when you think of cheap flat rides, most are spinners of some type.
I also noticed an indoor theater that wasn't open yet (said "coming soon" on the marquee) and I don't recall seeing that pointed out much anywhere else. If they got any kind of short movie in there, that would be a nice indoor attraction for people to escape the heat too.