Some context: We (my wife, 9-year-old son and I) have done ropes courses in 5 states. We are quite fit and adventurous, and have built our own 100' zip line and American Ninja Warrior style training elements at our home in NY.
TreeUmph is a very well thought out, designed and constructed attraction, and there were some very inventive obstacles which we had not encountered on other courses. The best (but not necessarily the most challenging) was a Tarzan rope swing to a cargo net (similar to an obstacle seen on American Ninja Warrior). I could do that one all day. There are ample escape routes for those in over their heads. There are 5 course levels and participants are required to finish one level before progressing to the next. We were bored by level 1. My son was only old and tall enough to go through level 3, but he could easily have done level 4, which is not much harder than 3. He probably could have done level 5 as well. Level 5 is just a 7 or 8 obstacle detour on the level 4 course, but it clearly kicks it up a notch. If you struggle at all on level 3 or 4, think twice before venturing onto level 5. I would have loved a longer level 5 course or at least the opportunity to repeat it, but repeating a level is not allowed. At other courses we've done, the sequential progression is not necessary and at TreeUmph it is the source of many bottlenecks. If you're stuck behind slower parties, chances are you'll be there for a while. You're allowed to pass others if they don't mind, but in practice on a busy day there is little opportunity to do that.
Since many other courses are at ski centers, they are typically graded the same way as downhill ski runs (green circles, blue squares, black diamonds, double black diamonds). This works great in the North, but may not be appropriate for Florida locals. Most visitors were tourists from the North anyway, so they could probably adopt it. If they did use this or a similar grading system, they could allow visitors to select appropriate routes, avoid ones over their heads and repeat ones within their abilities. Crowd management is obviously a big factor which would have to be considered before making such a change.
The staff were friendly, professional and competent at rescues. There were 3 rescues in front of my on level 5 and they were all executed safely and efficiently.