I've been to the flow trails twice since they opened. In addition to clearing the bazillion trees, I think everything on blue has been touched, and the bottom of green was updated. I think it's a nice improvement.
On blue most of the smaller stuff, the rollers that you can gap etc., seem easier. Not sure if it's my imagination, or if they were really changed, but the gaps seem shorter to me. Many, maybe all, of the tables have been modified, and I think all in a good way. The first one is taller and shorter. Not much work to get to the right speed for it now. It's "boostier" with a nice pumpable roller in front. The two tables in a straight-away about half way down both have better lips and jump bigger/easier now. The lower long table is even longer, with a really long forgivable landing, and it takes some effort for me to clear now. The second to last table is also bigger and longer (and better), and the last table seems similar in size, but just jumps better than it used to. There's a big new berm at the end of each trail which send you left onto the rightmost climbing trail with some momentum which is nice if you are headed back up. Also some berm work higher up on blue as well as some slight modification to teh line routes.
Overall I think it's an improvement all the way around. It's more challenging; I personally have yet to clear all of the last 3 tables in one run....but I am not the greatest jumper. Someone with solid jumping skills will probably clear them all with relative ease, but I think they are all probably more fun for an experienced jumper now.
So thankful for the crew of volunteers that put in the time/work to make this happen...THANK YOU. It looked so bad after the trees were dropped I thought it might just be abandoned. It's such a nice thing to have, especially for the kids. My daughter is ecstatic to have these trails open again to continue to learn/hone her jumping skills.
As for the garbage, it really didn't look too bad when I was there. I pulled some trash out each time, mostly forgotten empty water/Gatorade bottles. Historically my daughter and I would periodically bring a garbage bag and do a cleanup run on our last pass, so we'll start doing that again. We are right in town and when I stop injuring myself we'll be there regularly. The garbage/recycle cans that used to be right outside the fence were moved to the entrance to the dog park area since they took the fence down.
I imagine dust could be a concern considering there's a heck of a lot less shade now. It was real dusty the first time I went but we were on a pretty solid no rain stretch. Not as bad the second time, and one of the builders actually stopped by and was fine tuning things.
Anyway, that's my take for anyone that hasn't been yet. If you liked it before, you'll probably like it even more now. And it you've never checked it out, def worth it. It's also only 10 min pedal to and from the nassau trails, if that.