Finished the season yesterday. Agree teams of three are better, and not much point to the Level 2 setups, except maybe the Study, which seemed the easiest room in Level 1. I suppose they wanted to create more variety in the course to keep viewers from getting bored without the expense of building more rooms.
I wonder about the rules of falling in the lava too. In particular, there was one guy who went in up to about his waist while holding onto a pole (I think). He seemed strong enough to pull himself out, but the producers must have yelled at him to let go. On the other hand, there was someone whose calf went in on the way to the exit, and they were OK.
I didn't remember that the host was on Hyperdrive, probably my favorite Netflix competition show.