My take is that it was fun and a bit different. I wouldn’t criticise the designers for building it “wrongly”, unless they can’t ride it either. Some tracks are just hard and although I’ve no doubt that Solamanda is a handy rider it doesn’t mean he should be able to nail everything on a trail after only riding it twice.
The main reservation I had with it is that a lot of the trail is like a BMX track, but you only ride it once, rather than being able to roll up to the top of the start ramp and do it again. Also, places like this and the skills area at Cwm Carn are pretty remote and unforgiving if you do have an accident. So personally, as someone who’s only going to go there a few times a year at most, I don’t feel that I’m likely to progress my skills and I think that negates some of the point of having a purpose built trail.
I also think that trails with big jumps are unfamiliar territory for lots of XC riders. So until there are more intermediate skills areas or jump spots where the lame types like me can muck about and learn how to judge speed and distance and try stuff safely, people who are otherwise quite confident riders will hurt themselves.